Thanks so much for all the info everyone!
Well, the MOST important issue is latency, its got to be RIGHT on with no delay. Because if you are listening to the tracks you've already recorded WITH the guitar track you are trying to record you feel like your trying to "catch up" but it doesn't work.
I agree about buying an interface, I actually have the Digidesign 002 but its from 2003ish and the Apple. I checked the Digidesign site and it said,
"Pro Tools Software versions below 8.0.3(mine is around 6ish) are not compatible with Snow Leopard. Pro Tools 8.0.4 is a free update for Pro Tools 8 owners."
Sooo, in order for my older 002 interface to work with my new iMac, can I buy JUST the Pro Tools 8 software only, and if so, is it worth it? OR, do I just have to spring for a new interface altogether? If it doesn't cost much, it would be nice to get some software to use with my old interface. I didn't realize that the software would go out of date when I paid over $1k for the interface, kinda lame.
any advice? 🙂