(Bring on the flames...)
Many people would dissagree, but I would highly recommend a Behringer 1604. It is very similar to the Mackie 1202 in design and functions (but has faders instead of knobs, which is always a benfit). People like to rant about the Behringer mixers being lousy in quality control, but I have worked with quite a few and hadn't seen a single problem yet (knock on wood). Many people don't like the mic pre-amps on them. I think they're totally usable on a home studio, and if you will only use the mixer for electronic instruments, then I don't really see what have you got to lose. If you decide to get one, check every input and output before you take it home, make sure that there isn't track bleeding between the submixes, and you're good to go.
It's half the price of the Mackie. I used both, and IMHO, for a home studio, there is no need to spend this much more for the Mackie. You can always add an outboard pre-amp if you really need one.
Oren