We had an incredibly large amount of fun researching this article and getting the parts in from all the friendly companies who helped out here. It wasn't much of a decision when it came to deciding which processor to use - of course the X4 9950 offers the best performance, but that is at the expense of much more power usage. We ended up picking the X2 4850E since it is more than powerful for solid and smooth Blu-ray playback, uses the least amount of power out of all parts we tested and is also the cheapest of the bunch. The choice was easy in the end.