Im trying to choose between the Dell Inspiron 600M and the Dell Latitude D600. I understand they have the same intermal components, but I heard the casing is much stronger with the D600. The D600 I want will be about 300 more (I have a coupon for the 600m), but thats not a big consideration because if it came down to it, I think I'd rather have a computer I'm happy with. The question is is there that big of a diffrence between the two models? I'd appreciate any insight you guys can offer. Thx. Edit: Also what RPM HDD would you reccomend. Do the 7200 RPm drives run too hot, and are they even worth the extra heat?