Coming off a 2012 MBA with 2.0 GHz i7, how much faster would a soon to be released 2015 MBA with a Broadwell i5 processor be? I would like to save a few bucks if I could get away with it. Currently my MBA handles all my music apps like Reaper/Logic just fine for my projects. So I would think the Broadwell i5 should be just fine. I guess?