I'll be picking up a new MBP (my first real Mac ) here pretty soon. It will probably be the base 13 inch model (mid-2010), which will be a big step up over my current notebook/netbook, the HP Mini 311. Anyways, I have a couple questions, all regarding potential upgrades to the MacBook. First off, I've been looking at something to replace the stock hard-drive with. I've seen a lot about SSDs here, and in other places. From everything I've read, it is apparent that SSDs are very much a new technology. What's more, OSX doesn't support TRIM, which seems to be made out to be a big deal. Is it that big of a deal? I've also read reports where SSD degradation under OSX is much less severe than it is under Windows 7. Is this true? I'm not totally sold on getting one this time around, though: I'm also looking into 7,200rpm hard-drives. I know that the speed of these drives won't match that of a good SSD, but they are significantly larger storage wise. I've been looking at this one, which has some reviews by MacBook Pro users. They seem to be pretty happy. Here's my questions about this drive: Will it make battery life go down any significant amount? Will there be heat issues? Will there be a noticeable speed increase from the stock 5,200 rpm hard-drive? Now, comparing the SSD to the hard-drive, which would be the best to go with? More than likely, I would have to go with the 120GB version of the OWC Mercury Extreme Pro.