While I dont have personal experience with the drives of X360 specifically ... a Philips lite-on drive is something I would trust a lott more than any other. Brand image and quality expectation really.
A question from my side
Exactly which sides of the console heats up ? Right now there is only a considerable warmth (not hot to be honest) under the console (I keep it horizontally on "stilts" making it 2-3 inches higher than the surface, so air passes underneath quiet well). Sides and back all have cool air coming out of them. Top is normal too.
If this warmth is to be kept under control, I can put a fan underneath it which would direct air directly on the bottom area of the GPU/CPU. Useful or should I not be bothered about it ?
@adilthegreat
The activation disk is something that you run once everytime you start to play any Wave4 game on drives with the i-xtreme 1.6 firware. IX 1.61 removes the need for the disk and plays Wave4, but that firmware is not available for the Lite-On drives ... so you need the disk if you want to play any of the latest games like AC2, MW2 etc