Sparks is great...Tilt is pretty much the same thing. When I was back in college we use to drink them in our night classes before we'd go out.

I've tried pretty much every energy drink out there. I use to drink them all the time in college and when i was interning (engineering can be tough). I use to buy the cases of red bull in bulk from Costco i drank so much. then all the stomach problems started. i had to get a colonoscopy and endoscopy and my whole stomach lining was completely shot. My doctor said all the energy drinks and caffiene most likely caused the majority of the damage. they are ok to drink once in a while, but just don't drink too many of them like i did