On the issue of stability, let me say since Ive had my mac ive only had one kernel panic, and that was with 10.1.5. Since I put jag 10.2 its been 100% smooth. Looks well shit, OS 10 wins hands down, the only thing I dont like in the aqua GUI is the actual color aqua. Alot of the buttons are aqua color and they get kind of annoying, but duality and the milk theme cleared that up quickly. One thing I really like is that its very organized, most apps put the preferences in the same spot, its like everything has its place. Thats all I can think of right now, and if for some reason you dont like 10 you can always put linux on there.