Hiya I have got a virus b, which I gather is pretty much the same as the virus c but the c has an easy interface which believe me will be great cos the b is a bugger for menus and shit.

Anyway I recommend you go down turnkey and have a go on one b4 you buy if you can, just to see if the sound suits

check the link below and click the hear the virus b link...it is a sample riff I made on the virus b and gives you a good feel for how dirty it can be, also do nice trancey stuff, basses and even drum noises....the double filters means you can do some really mad filter tweaking....

http://members.tripod.com/LITTLE_MISS_SKINNY/acid3.htm

I also recommend having a listen to the novation ks5....definitely the best keyboard synth I have ever heard.....