i wouldn't say it's the same design: the PSU has a differente position, there are also much better options for installing radiators (you could only fit one 360 on the 800D without a little modding), also this case seems to have a much better cable management.
I don't think they can add much more than we already have now with Z68, some new GEN3 board could come out before IB but until Z77 i think nothing will change.
AFAIK with Sandy Bridge you get bettere performance by running SLI with native 8x/8x without using the NF200 chip, with three card of course is a different story.
Honestly i would go for the EVGA, i had the intention to buy it but it is out of stock everywhere.
The Sniper is a very good board but it's much more expensive and i prefer to buy an external sound card (i can use it also when if upgrade the mobo in the future).
I'm considering the G700 as my next mouse and it uses the same sensor i think.
You can try the Mionix Propus 380 as a hard mat or Zowie Swift, personally i think i will buy the Propus.
I was looking for something for my keyboard too, if you don't want to go the Razer route you can check the Ratscar pad or Corepad Deskpad/C1 XXL.
Regards
i was waiting the RV03 to make a decision: i must say i like this new version better then what we saw at cebit last year but i think i will buy the RV02-E.
I prefer how the hard disk are set up and also how it looks.