Hello all, I am a recent switcher. I got my macbook core duo, 512mb ram, 60gig hd, etc. yesterday. I plan on upgrading the hard drive and ram soon, but first I want to consider some protective cases and covers for it. Particularly looking at the hard shell cases, Techshell, Speck or the Macessity bookshell. Does anyone have any advice/experience they are willing to offer about any of these three options? I have read a bit about the techshell and quite alot about the speck, but the bookshell doesn't have many reviews floating around yet, but looks to be the best option since it has the cooling slots on the bottom and appears to be totally smooth, unlike the speck case. I was also wondering about palm/keyboard protectors. Are they worth it? Do they really overheat your mb like some say? I am debating between the moshi palm protectors, or a keyboard cover that extends over the palm rest. I am mostly interested in any experience some of you may have with the extended keyboard covers. Are there any issues with these, such as the screen not closing or being pushed against by the cover? Sorry for the huge post, I am very excited about switching to mac and welcome all of your help. Thanks all.