I got mine from Machines. Im using Speck See-thru Satin 13" with Moshi Palmguard and Moshi Clearguard + Free sleeve (I got this from machines when i purchase my Macbook 2.4) + Crumpler King Single.

I would recommend you to get a Speck See-thru to protect it from scratches..

P/S If you have machines membership card.
You would get 10% rebate.
RM515 - RM51 = RM465
Very nice deal I got.

Now thinking of getting an Incase Neopreene Sleeve......

That post was way back in 2009 bro, i dont think machines have rebate in their member priviledge currently