Hi guys! Just joined this great Forum and this is my first Post. Here's what I need a 13" MacBook Pro to do for me. I will use it at home to record my original songs, and I will use Logic Pro 9, MainStage 2 and Addictive Drums on it. I will purchase a USB Interface that will have 4 inputs and 4 outputs. The most I will ever record at one time will be 2 tracks, perhaps 4 (if I record my Kronos in stereo and Addictive Drums in stereo, all at the same time). What I plan to do is get enough of the song down so I can take it to my Guitar Players Studio, where he has a ProTools HDX System (and Logic Pro 9 as well) and he will add Guitar, a real Bass, backup Vocals, etc. So my question is, for my needs, will a 2.5 GHz i5 with 8GB and a 500GB Hard Drive work as well as a i7 2.9 GHz with 4GB and a 750GB Hard Drive? Thanks!