Emu XL-7 & MP-7 User's Group

I know Realm uses one. Anyway I have a Korg Karma. It is nice, has 
way too many features for me personally. But wihtout using outboard 
effects such as guitar stompboxes and preproduction filters. The 
sounds aren't dirty enough for my taste. I haven't had much 
experience with the Virus, but I would like to trade my Karma for a 
Virus KC or even a desktop or XL rack.

Do think this is worth it or should I keep my karma?

Thanks all,
Greg