I just bought some of these (they are compatible with all PSU's and equipment. They are just simple extensions).
Reasonably priced for sleeved cables. If you want to make it look good, I'd suggest buying the 24-pin one and the GPU 8-pin ones as well (for however many you may need). I ended up getting 2 12v 8-pin CPU's, the 24-pin, and 2 8-pin GPU's for my system. Haven't set it up yet, but I can see exactly how it's going to look and it looks awesome.
Someone linked these. Will these work the same way as those?