I own a MBOX, I dont need more than 2 inputs but I do need a midi interface. I could get the emagic mt4 for $60, so that would be cheaper.. I do also have preamps so I dont need the ones on MBOX. My question is if there is any advatanges that I will gain by upgrading to Command 8 besides the ones you can read at Digidesign web site.