Heh, we're not all as fussy as 5imon I don't mind a tiny bit of latency, every audio interface i've tried has been fine for me. As long as you're not trying to use on-board sound or one of those cheap USB-Jack Cable things you should be OK.
I used to have a dodgy copy of the ampeg SVX which was quite cool, but honestly I never liked the bass sounds as much as those you can get by adding your own EQ, compression, dirt etc. So maybe just invest in an interface and start playing about with free VST plug-ins.