Yep, since I switched to modular PSUs, I could never go back to the old cable mess.
I'd say the best PSU for your needs would be the Xigmatek 650W modular
. 2xPCI-E 6 pin and 2xPCI-E 6+2 pin. Manufactured by CWT, like the Thermaltake Toughpower and Corsair VX line. Unfortunatly Newegg.ca's prices are crap and TD has a very poor selection.
If you're OK with MIR's, I would recommend the Corsair HX620
, if not, then the Xigmatek will be fine.