have you tried N.O Xplode from BSN, I have been using it a while, and I like it, however it seems to have a similar effect as other...
REALLY GOOD pump, and energy, but the energy only really lasts about 45 minutes, and you have to hit it hard.
The only nice thing I found is that I don't CRASH per say after w/o.
I like it 2wks on 1 wk off.