Final GPU Decision

OK I've narrowed it down between two video cards and I need help making the decision. So if ya'll could help that'll be great.

My two choices are(These cards are going to be put into a gaming/editing rig).

GIGABYTE GeForce GTX 660 Ti 2gb

                         or

HIS Radeon HD 7870 Ghz edition 2gb

Help is appreciated.

Buy the 660ti of you have a use for CUDA, otherwise, go with the AMD.