Keep in mind that the interface you use is the heart of the recording system. So when buying one, don't skimp. If you look around....check Beagle's web site, he has a listing there of interfaces.....also look to see what other long time users are using in our studios......
Determine how many inputs you need.....MC only supports 2 so the lower cost interfaces are perfect since they only have 2 inputs,,,,,,, do you work with audio- you need 2 inputs, and be sure the interface has good preamps on those inputs..... some do, some don't..... do you use MIDI.... you may want a midi input...... how many outputs do you need/want? And of course, your budget.
Presonus, M-Audio, Focusrite are among the better known names. Be sure they support ASIO drivers, which the better ones will.
ask questions before you buy something ....we can steer you clear of making a mistake