P6T Deluxe v2 or E758-A1 3-Way SLI ( Best OC?)

Owned
OS EM Vista Ultimate 64 bit
PSU: CORSAIR CMPSU-850TX 850W
HDD: Western Digital Black Caviar 640GB
Case: Cooler Master HAF full tower
CPU: i7 920 D0 Stepping ( On it's way in the mail atm )

So, I want to know which is a better board for stability when Overclocking the http://www.newegg.com/Product/Prod [...] -_-Product or the http://www.newegg.com/Product/Prod [...] -_-Product

Ram? It looks like OCZ Platinum is the best performance value for the money...

Going for a Mega for the heatsink.

Lastly, I might have enough for a Ati 5850 depending on what day it actually retails.. I don't want to wait more than a few days into October though. Any ideas if it's going to break $300? I figured it would even out around $270-280.

Why the hell is the upgrade for Windows 7 ultimate so damn much? With a fresh unopened copy of OEM version Vista Ultimate 64bit.. i'm kind of bleh about this because I really enjoyed Windows 7. I can't return the copy because I ordered it from Newegg like.. 6 months ago. Any help could be wonderful since I actually want to get this ordered by like pretty much next week.

My vote is for the ASUS board over the EVGA board. I agree the OCZ Platinum is a very good RAM and is highly recommended.

On the Win 7 upgrade, I'm not sure what to recommend to you on that. I'm not a fan of an upgrade disk over a full version OEM. You have to install two windows disk for one install. I would recommend to hold on to your Vista disk and purchase a full OEM version of Win7 once released.