Reply to Which mixer and sound card with 2 midi controllers?

Hello. I want to make a setup with 2 midi fighters and a mixer.
But I really dont know anything about mixers,would a Behringer DDM 4000 be a good choise?Or would a cheaper 2 channel mixer suffice? If not it would be great if someone could recommend a good mixer for this. Preferably an afordable one.

Another thing that im in need of , is a external usb soundcard. Currently im looking at the Akai EiE. Its not too expensive and it has 3 usb ports in it which seems prett convineint. IM also considering Traktor audio 6.
Which one is "better"? Or if someone could point me to another decent soundcard that would be nice.

Thank you.