Reply to Macbook Pro Hard Cases - recommended?

hey guys i just bought a brand new macbook pro and i've been OCD (obsessive compulsive disorder) -ing about it, i didnt know how easy the aluminium MBPs get smudges (even just by a single touch!) and im so paranoid that im gonna get dents (a few of my friend got dents on their mbps just from small items like a pen dropping into the mbp)

im believeing of protecting my investment with a hard case, so far i am looking at the Speck Seethrough satin or the Incase Hardshell case

anyone use these cases? do they make your macbook pro overheat?

also, there are some el-cheapo cases on ebay that actually look really good (free delivery from hongkong as well, and comes in a range of colours) anyone tried those?