I have been researching about a new MAC but I cannot makeup my mind. The only thing that really worries me is the external Hard Drives. I have a western Digital Studio Pro which has USB2.0 and FW800 connections. I am using it with FW800 now. I am worried about a performance drop when I use it with MB Air. The things I do with my current MB Pro 2.4 GHZ ( 2009 - May ) , 4GB RAM. Record my jazz band live to 16 tracks with RME-FFUC + Presonus Digimax Write jingles for TV ( usually 10-12 tracks with 5-6 EXS instrmnts and 2-3 NI KOMPLETE Elements ) Compose, ( 2-3 Amp designer tracks, 2-3 NI Kontakt, 2-3 EXS instrts ) Compose with reason rewired to Logic I now have all of my samples in my internal drive, but since NI Komplete has 90GB of library, I might have to move those external drive and this might result in a performance hit with a USB drive. I know internal drive is very fast and should be fine with audio recording but, reading sample from an external USB2.0 drive worries me. How is your experience with the new MacBook Air? What do you guys think? Will it be fine for my needs?