If you just want a basic recording interface I would get the Tascam US1800 (around $300) if you want a mixer plus an interface check out the Alesis Multimix 16 USB 2.0 (about $600) - they both do 16 tracks which should be enough for multiple vocal mics, guitars, bass and a drum kit.
I use the Alesis - If I had to get another interface I would probably get the Tascam cause it's a lot cheaper and does basically what I need.
The Alesis is good for mixing sound though if you are recording as a band.