GPU'S are out of the race for mining BTC, you need asics for that.
so how do I best utilize my gpu miners these days? I powered my rigs down a few months ago while I took a spiritual retreat. nobody has come up with a different algo for GPUs that has gained any traction?
What are you talking about? There are so many different algo that came out just recently, Lyra2 and Neoscrypt are the 2 newest.
Anyway, you can try mine x11 and x13 algo on nicehash.com or wafflepool. It seems to be the most profitable right now.