I have an Octatrack, Virus TI and Analog Four at the moment.
Have found the Octatrack works really well with the Virus TI, so I can do plocks via CC to the Virus.
I am thinking of selling my A4 and getting a Rytm, do you think the Virus will cover the sounds previously done by the A4 (even though not analog of course)
I need a drum machine I guess, but already have the Virus and a Moog Minitaur
The Virus is beatiful and complex and a beast when it comes to polyphony and multitimbrality. I wonder what the A4 would add to that, with its four voices.
As for the Rytm, you’ve got an Octatrack. That can take you very far. It doesn’t groove like the Rytm and it doesn’t have the analog stuff going for it, so the Rytm can make your drums and your samples sound like the stuff of awesome.
But whatever you put into the Octatrack, if it sounds good to begin with, it sounds good when it’s played in the Octa as well. So if you’re into making your own beats, creating your own loops, fine tuning this and that, the Rytm is a good choice. If you’re more into loops, repeats, existing material and stuff, the Octatrack offers plenty.
I’d say explore what the Octatrack can do for you in regards to drums first, if no other reason than to find out what you’re really looking for in a Rytm.
Seems like the best way way to find out would be to put the A4 away for a while and see how it goes.
For the record, I have a Virus & a Rytm playing together - it’s f*cking brilliant! Never really felt the need for an A4…
I have a Virus B, Octatrack and Analog Four. Between Octrack’s sampling and drum/percussion sounds from both the Virus B and A4, I don’t ever feel I need a drum machine.
It sounds like you haven’t clicked with the A4 yet. I too wasn’t very impressed with the A4 when I first got it but after getting a patch editor and really spending time creating my own sounds with it, I think it’s a great kit.
A4 patch editor? Do tell
At least I got an AR and it works very fine with the A4 
I also own a TI (Keys), really like its unique sound - but: TI is a desaster. So I considerd to throw my TI out of the window
I think the A4 has its very own character of sound. For sure you can ‘imitate’ this on the TI, but A4 remains A4.
My advice: keep the A4 in your rig and get the AR!
There is a HUGE difference between a synth that imitâtes analog synthesis and a analog synth.
Analog Four FOREVER 
put drum sounds in your a4, they are quite good,
some say as good if not better than the ar
give it a wizz
see if you can make it work for you
tho if you need a dm get a dm
http://www.elektronauts.com/t/editor-for-analog-four/689/3668
Best $5 I’ve spent.