Just about all of the Creative cards are lowest common denominator in my opinion. Ever since the consumer sound card market collapsed, I haven't seen Creative put out anything new or special that's worth much. I would just guess that any card from their line that has the inputs and outputs you want will be fine. I'd get the cheapest one.
However, if you really want a good interface, then you might look at one of the cards that are made for the pro market. Ones that aren't made by Creative. They'll probably cost you more, but should deliver higher quality in general.
Anyway, that's just my opinion based on zero facts. So you shouldn't believe anything I just said. In fact, it's probably all lies.
