I hate the vaporstar. I bought one and the heat would form bubbles in the resin around the wooden bowl whenever it I smoked out of it. Then I would get this massive headache... I guess from the wood resin vapors in whatever coating was on the bowl.

I just wanted a cheap vaporizer that I could use away from an electrical socket. I tried the "ubie" too, but it was too small.

Now I just put the weed in my glass bowl, tilt it sideways, and hold the flame about an inch under the bowl. 10-15 seconds later I'm inhaling vapors. Once you get the hang of it you can keep the the vapors coming without ever actually burning the weed. I'm sure the expensive vaporizers are a lot more accurate as far as tempurature... but this works for me.