Benchmarks are usually just my starting point. Then you pick out 3-5 cards that you like the performance of and check out their prices. Once you find 1 or 2 good price/perfomance cards then start reading reviews on the different makes/models. Things to consider are OCing potential (even if you don't wanna do it now you might wanna consider OCing down the road so it can be important), temperatures, how loud the fans are, dimensions of the card (if you have a full tower case it won't matter but some smaller cases will have issues with some of the bigger cards out there).
Once you find something you want then start hunting around for good deals. Basically if you do all these things you will start to have a good grasp on the current GPU market and even if some other card suddenly goes on sale that you weren't originally considering you can then quickly do some reviews on it since you have the experience to quickly find the info that you are looking for.
Drugs are never the answer, unless the question is what isn't the answer.