buy overclocked or regular?

I going to buy the EVGA E-GEFORCE GTX 275 and i can buy it regular for 201$ or the superclocked version for 250$ which one would you recommended? and if i did buy the superclocked version would i be able to add a non-overclocked EVGA E-GEFORCE GTX 275 card for SLI?

so it would be. . .

EVGA E-GEFORCE GTX 275 SUPERCLOCKED
SLI
EVGA E-GEFORCE GTX 275 REGULAR

 

your better off with a radeon 4890, cheaper and better

 

The Geforce cards are phenomenal (i have 3) the 275 is a superb card but instead of getting the overclocked version my money would go on the 280 it runs faster and produces less heat coupled with a good CPU it will take all you throw at it.
I have a GTX260 with an Intel Q6700 also a GTX295 with a Q6600 and it the difference between them is minimal

 

well yes but I want the EVGA X58 Micro mATX MOBO and and its SLI:cry so if i want two vid cards i cant use crossfire

here is the mobo if you want to know more. . . .

http://www.evga.com/products/moreInfo.asp?pn=121-BL-E756-TR&family=Motherboard Family