MSI X58M?

This one is good
ASUS P6X58D-E
That one should be better for having a wider gap between the PCIex16 slots ->less heat and it's cheaper.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Look up on the net for reviews, here's one:

http://www.tomshardware.com/reviews/cheap-x58-motherboa...

Thanks a lot, that is a seriously good option indeed.
Just another thing, in the meanwhile, i got really confused, thanks to some Core i5-760 reviews, between buying a Core i7-950 and a Core i5-760 since i'm only going to use 2 graphic cards, so maybe i'll get the i5, although the i7 looks good in terms of longevity. What do you think, is the i7 worth for me?
And if not, could you please show me another Motherboard as good as the ASUS P6X58D-E but for the i5?
Thank you, i really appreciate your help.

i5 760 is fine.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Get 2x2G of RAM with that.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Thanks once again, i'll certainly buy those two (i prefered the ASUS P7P55D-E). By the way, these will work with a Coolermaster CM690 II Advanced case right?

Sure.