Noticeable differences between these two ram sets?

[-fedexer-]

I'm currently looking at triple channel ram, and decided one these kits:

http://www.overclockers.co.uk/showproduct.php?prodid=MY-052-GS&groupid=701&catid=8&subcat=1392

and

http://www.overclockers.co.uk/showproduct.php?prodid=MY-279-CS&groupid=701&catid=8&subcat=1392

For the price difference between both, would i see a greater performance from the corsair due to the pricing? Or are they considered to be relatively the same?

Also which would OcUK pick?

 

[-fedexer-]

Is there an easy way to tell roughly how much room you'd have between a cooler and the ram sticks?

If i were to be using a asus rampage III?

Possibly using this cooler:
http://www.overclockers.co.uk/showproduct.php?prodid=HS-043-ZA&groupid=701&catid=57&subcat=1395
Unless ofcourse anyone can suggest a better one, totally new to build design ^^

 

[-fedexer-]

Interesting, nice call. I've outted the mobo and the cooler in exchange for the 2 you listed, i hadn't even considered the mobo you suggested before now