New System Build MoBo decisions

I'm making a new Intel build, and have a 1000 dollar budget
fortunately I only need a few things, such as.
Motherboard, Intel. looking at x38's specifically two ASUS boards,
I will however be throwing a EVGA 8800 GT into it if that matters(probably will never SLI anyway)
as an alternative, mostly for reliablilty I have developed interest in the GA-P35, since it gets top scores reasonable price, and dosn't seem to have the excessive BIOS issues these two ASUS boards have exibited.
ASUS P5E LGA 775 Intel X38
Crossfire
http://www.newegg.com/product/prod [...] 6813131219


ASUS MAXIMUS FORMULA LGA 775 Intel X38
http://www.newegg.com/Product/Prod [...] 6813131227
also crossfire

GIGABYTE GA-P35-DS4 Rev. 2.0 LGA 775 Intel P35
Not X38, has Nforce
http://www.newegg.com/Product/Prod [...] 6813128064

Proc: will probably be an C2D E6750 2.6 Ghz unless later in the budge there is room to move this to the big time
Q6600 2.4 ghz
http://www.newegg.com/Product/Prod [...] 6819115017

powersupply OCZ700GX
http://www.newegg.com/product/prod [...] 6817341002

Memory currently is some version off 1Gx2 DDR2 1066
such as G.SKILL http://www.newegg.com/product/prod [...] 6820231128

I will probably sneak in a WD SATA HD for the 150 dollar range.

any and all comments would be appreciated

Everyone seems to say that, but for most of us we dont want to change a MB every year, whether its cost effective or not.
We will change a chip though because we can easily see real tangible benefits with minimum effort. As long as the software has progressed to a point where a newer chip makes sense. ie improved FPS or better quad core support inside games etc. but if its going from 60fps to 80fps with a new chip it makes no sense to change, you wont notice the difference in real world gaming.
from what ive read most games are constricted by GPU not cpu. I know in my last machine I updated the videocard twice, the cpu I didnt change. whatever limitations my cpu had were made up<mostly> by a newer GPU. I expect this machine to be no different.

I would get the evga gts512 over the gt. But its just my opinion. it seems to come close to a 8800gtx for 200 less. plus it runs cooler.

alot of people here know this stuff better than me, this is just my opinion from reading these and other boards for a couple of months.
Im leaning to an x38 board myself. I figure they will support it longer than a p35, updated bios etc. plus pcie 2.0, I know no card uses that yet or can even fill pcie 1.1 but in a year they will and like I said earlier the video card is the easiest upgrade to improve gaming if your planning on gettign 2-2.5 years from your build

If Im wrong on any of thinking please fire away. you guys have been a great resource