To hear praises and frustrations re: Access synth you need only to peruse the posts on this board. In general, they all seem to be buggy little gems in some way or another.
I have an Indigo 1 (virus B) and a TI Polar. Both of them perform perfectly in single mode, playing one sound at a time (which is what many people do with them). The glitches tend to appear when running them in multi or sequencer mode, with a couple of arps playing and lots of simultaneous effects. Still, they work great 99% of the time, and most glitches can be remedied with a soft reboot of the instrument. Fortunately, this only takes maybe 5 seconds, and the Virus boots up with the same sounds/edits loaded so you can start working again right away. Occasionally, a hard reset is called for, which is rather annoying.
People put up with these issues, though, because the synths sound great. The TI models, in particular, sound AMAZING, and have many features that no other instrument can touch.
I am a "home hobbyist" so I can put up with the occasional Virus crash or lockup in my home studio. If I was playing live, I'd probably be comfortable using a Virus on stage in single mode.
Guitar Center typically offers at least a 14-day return policy on synths. I bought my Indigo used at Sam Ash and they gave me 30 days, as did GC when I bought my Polar. My advice is to get the KC as long as they're willing to give you some kind of no-questions-asked return policy. That's what I did, and I decided to keep the darn things.
