Martell1977 :
I just bought one from Best Buy. I usually avoid BB but they have a sale on controllers and getting $30 off the price of the controller is great. I'm thinking of using a 1tb 2.5" HDD I have laying around to upgrade it right out of the box.
I strongly recommend you just plug in an external USB drive. An external drive is vastly easier to "install", doesn't risk voiding a warranty, and is potentially a lot faster. Boot times are instant anyway with default super low power standby except for the occasional update/reboot. Plug in an external drive with a 7200RPM 3.5" drive and install all your games to it, boom better load times vs a typical 2.5" drive. Personally I'd go with a decent brand empty aluminum shell and slap in a WD Black, but that's just me.