Purple Haze doesnt exsist! It died out in the 70's because it wasnt all that potent. What ever you have might be called purple haze by a dealer but it's not the original purple haze strain and therefor not purple haze at all.

Look for sativas if you dont want the sleepy indica stone.

But if you want weed that'll hit you like a dump truck - and then reverse over you ya want to be looking for strains like Northern Lights, or White Rhino, Hash Plant, Kush, Afghan - and hash is also a nice product, and the high is slightly differnt than with herb.