I don't know that much about Enermax, I tend to stick with the big name brands, Corsair, or PC Power & Cooling, There product may or may not be any better, but there reputation, customer service and warranty usually is. Can not tell you first hand that the Corsair service is better because I've never had an issue, ( with a corsair PSU  )and have therefore never had to use it, but have seen posts from others, and they have seemed satisfied. I have even seen Corsair_Mike come on the forms to help others, with both power and memory, and that impressed me. He did show up when the Dom GT issue was going on, I've never seen an enermax rep , or any other PSU manufacturer rep hunt you down to help you fix a issue. Normally it's you hunting them, to beg for help.    

at the moment im running without the 260 for phsyx, and man does this 5970 get hot, is there longer crossfire bridges i can buy, the ones supplied i have to butt the cards next to eachother and they are getting rather toasty.