Don't know about the recent macbook pro's but i have the last gen 2.66ghz i7 and i had a 500gb 5400rpm hdd and it REALLY slowed down recently, were talking 4 minute boot times. So i bought myself an OCZ 240gb agility 2 SSD and lemme tell you, EPIC difference. Full bootup with everything loaded takes about 25 seconds... safari opens in half a second, same with itunes, everything is amazing, huge difference! However, i thought that if i removed the spinning hard drive that my battery life would increase quite a bit, well it didn't really, tad bit better, was at about 5 hours now i'm getting almost 6.5.