I saw the PowerColor 9600 Pro EZ 128mb version at pricewatch for $137 shipped. I saw the Sapphire 9600 Pro 128mb at Newegg for $149 shipped. Is the EZ version less powerful like the SE? Or is a pro a pro and all the same regardless of who makes them? Also I keep seeing the 256MB version of this card for less money. Is it less of a card? Thanks.