Well both of them have MIDI I/O, which is what you need. You'll probably also need some MIDI cables. A pair of preamps is handy if you wanted to set up a pair of mics to record a band practice or the like. Both of them look ok, but I can't say without first-hand experience. If you can, try to look for them in a shop and inspect the build quality. Build quality can be a decent indicator of the internals. Does that sound crazy to some people? Possibly - but in my experience it holds up. I've seen some TERRIBLE interfaces and they were all built very badly, and vice-versa.