I've been using a product called Gorilla Mode (from Gorilla Mind), can't say enough good about it. I also take 4mg of 99% yohimbine hcl a few times a day. I've had great results.
Now, back in the day there was a product called NYC stack; it was Norephedrine, yohimbine, and caffeine... Norephedrine got banned in '05 but damn I miss that stuff, it was awesome for energy and performance.