Blu-Ray media sucks cause it takes up bout five times as much space as the others but has no technical advantage? Do PS3 games have better graphics than PC or xBox 360 games? Most people would actually claim the contrary. Is the Blu-Ray movie quality higher than HDDVD or whatever? Well it probably is but think of it like this, how high can the video quality get until you stop noticing the difference? Cause for me it was a long time ago. All Blu-Ray does is make software for those systems harder to pirate, good for the companies (or so they think) bad for us.
Windows 8 isn't a PC OS, it's a tablet OS ported to PC. Enormous amount of compatibility issues aside, it doesn't resemble a PC or even console OS in any way. Tried both the Beta and Final versions and each forced me to clean the monitor of fingerprints.
I'm not familiar with those specs, (I've seen several, don't know which ones are real or which ones you're talking about) I know it will use an AMD CPU. I'm not a fan of AMD but who knows, maybe the 720's AMD CPU won't burn out like 3 out of 4 of mine.
EDIT: Actually that's 2/4, the 3rd one had driver issues. I've also had driver issues with two of my ATi GPU's... huh... probably a coincidence.