Asus, EVGA, Gigabyte, MSI, PNY, Zotac are all good. Best thing to do is decide the amount you want to spend and see what the highest chip-set (in your case the 780 or 780ti) you can get in that range. Then check the Core clock, Boost clock, and memory clock speeds on all the models in your price range. Buy the one that gives you the most bang for your buck and has the features you want. One of my personal preferences is to have my card fans exhaust out the back of my case instead of inside my case.