I bought a 15" Macbook witha i7 2.2ghz processor and upgraded to 8gb, but i still have a 500GB 7200 rpm HDD. I have seen many comparisons with the MBP w/SSD vs MBA, while the MBP is worlds faster than its HDD counterpart, i was wondering why it doesnt beat the MBA? it has a faster processor and better graphics card. It doesnt make sense to me. also, if i get a SSD in my MBP, will i have the "instant boot" and the 30 day sleep time like the MBA? Thanks, and sorry if this was posted somewhere else. Gotta go out and i wanted to get this posted before i forgot.