What is it and why? 
Sequentix Circlon because it has these supersex Cherry Buttons and i have a good place on the waiting List. Besides this it looks as it is does exactly what i want from a Sequencer - a thing i canāt say from Logic.
I was looking at it just before I posted this and OH MY GOD SO EXPENSIVE.
Cirklon for me too, even if Iāve sold mine a month ago. May be it was doing a little bit too much things for me ā¦ Iām now using my own max4live sequencers, which is still PIY (Program IT Yourself).
Midibox Seq V4, extremely flexible, but still intuitive with no excessive menu diving. Some key features for my purposes, e.g. MIDI Re-Sync while running (think MungoSync).
Oh, and itās DIY
To be honest, the Circlon is just a replacement as long as theres no Mutable Instruments Sequencer. Sadly Olivier said he likes to play around with analog circuits more than coding another sequencer . . . but on the other hand there will never be a Mutable Poly he said 
Well
Once again itās only guesstimation, but Iām pretty sure Olivier has been cooking something related to cyclic recentlyā¦
I really hope we will get a Mutable seq at some point (not too far in the future)ā¦
I still use my Yamaha QY700 ā¦ its quite āpocket calculatorā but Iāll be damned if its not just a powerful music-making machine ā¦
My favourite? Umm, I only have 1! A Doepfer MAQ 16/3 which I have had for 15+ years. Itās kind of dated I guess, but then it is rather supposed to be. You can do some cool things with it, and itās a complete trip to watch and use with those 48 LEDs zipping back n forth. It makes Knight Rider look amateur 
Being able to sequence midi CCs (and even patch changes) much the same way you do with notes is a highlight for me. I guess the MAQ is no Cirklon, but I like it a lot anyway.
x0xb0xes also double up for a fun, if somewhat basic hardware sequencer.
[edit] DOH! I nearly forgotā¦ The Tenori-on also makes for a very interesting and quirky sequencer.
I also have Cyclic, and and have spent quite some time doodling with the Shruthi sequencer and arp, and I like making good use of all the ragaās. Which makes me think that if Olivier were to turn his hand to making a hardware sequencer of some kind, then I have no doubt that it would be rather goodā¦
I have Roland MC300, for what I want it is perfect, but not so perfect is lack of any RAM for the OS (I have the super MRC disks for the MC500MKII, apparently they are essentially the same machine but as there is no RAM for the OS in the 300 the disk needs to load every last subsystem every time you select a function. I think I will invest in a MC500mkII if i ever find one was as cheap (I was like Ā£15 for my MC300 including the postage!) Im trying to get away from using computers (pee ceeās) so what I do is sequence everything in the MC300 (although due to the limitations I am dumping patterns to Cubase, fine tuning them there, especially with CC changes then dumping it back to the MC300) then slaving the MC300 to my ADAT using timecode and then I can multitrack all my different synth parts. Live (ie. in the bedroom! I am not playing my music for anyone else) I can set off arepeggiators and drum machines etc all in pretty good time with the MC300. I just wasnāt getting anything very tight with Cubase on PC. I havenāt really explored the shrutiās sequencing/arps as Im programming all the parts it plays (or I play them in real time, like leads) but my simple setup of MC300, JP8000, Shruthi-1, Electribe ER1 and SR16 (plus a zoom studio) is all sounding good to meā¦I need another Shruthi and also like look of Minibruteā¦if I can ever MIDIfy my monotrons then I will have some setup going
But from a āgear I wish I hadā ā¦ the ARP 1600 sequencer looks to be the best. I have built crap sequencers around the 4017 but would love to build something like the ARP sequencerā¦being able to slave a sequencer to tape is really what I need, I think someone has cracked this for the baby 10 toy sequencer, but there are a lot of irregularities with it, like it starting on the second stepā¦ I love things which are hands onā¦and anything that has a relation to early Depeche Mode
Just now I am using the Atruria Arp with a MIDI controller, you can get some great random sequences just by pushing a few faders, very cool way to write music
I donāt own any of them, but my planned next (software) sequencer is a hybrid of ideas found in the Manikin Schrittmacher, Doepfer MAQ 16-3, and Sequentix Cirklon. I also donāt own a hardware Klee or M-185 , but I like those too.
Like others, I would love to dream about a nice hardware MI sequencerā¦ Lord knows Olivier had great ideas for me that I implemented in CycliC .
There was a limited edition of these (five?) in slate with gold knobs I gave serious consideration too. I ended up not buying but it did look nice.
GenoQs
regards
Klee, thats the one forgot about thatā¦it looks like a modern ARP sequencer Making a MIDI one would be very good I must check this midibox stuff!
Here is a link about my max4live device step sequencer (I spoke earlier in this topic) : hps-octane
HĆ©di K.
modular sequencing is where itās at for me -
sequential switches, clock utilities, comparators, boolean logic, sequencers of different length and fundamental design, randomness of various stripes, PWM of clock signals, gate to trigger, fancy quantizer designs, analog shift registers, sample and hold, matrix mixing, the list goes on
if I just want to sit down and sequence a completely pre-determined set of musical phrases thatās why I have MIDI piano roll in a DAW and an expert sleepers solution
hpsounds has a good tactic with the max4live based solution - Iām going to move somewhat in that direction eventually, and Iām looking to have āsequencer modulesā in the computer that I can send reset/clock signals to from my modular (I already do it the other way around sometimes of course)
My modular is mainly controlled by the mighty MB-SEQv4 acting as a Lemur-controllable WiFi 8-channel MIDI/CV converter. Iām looking at getting into more traditional modular sequencers like a TKB and all that jazz later. I hope to finish the Dave Kendall/Fonik discrete MIDI clock module soon, then I can slave the analog gear to the global tempo without breaking a sweat.
It is not really a dedicated sequencer but I like the Octatrackā¦ 8 Miditracks, good Arp up to 4 notes chord, independant track length to make āOstinatoāā¦
MFB Urzwerg Pro MkII look awesome and at a decent price. Would make a good companion to Anushri.