^ I guess it's what works for each individual, I find hiting it harder pulls in the air faster and when you see vapor in the bong you know it's just that and not the begining of smoke from scorching. The few times I have scorched it was when I was pulling to slow and let the heat build up to fast and then all of a sudden I crossed the temp line and it started smoking. Everytime I pull fast I get vapors when theres some there to get but I NEVER scorch pulling medium to fast and hell even when pulling slow scorching is rare with the VaporStar

I have another lighter based vaporizer(The Pipeorizer) and after further review the VaporStar is just supierior at every level. While I do still like the Pipeorizer(found on ebay) it's because it does work very well but you have to be more careful and it's also only $13.99 delivered THAT'S CHEAP(but you need a pipe which puts it up around $30ish w/pipe purchase), I like them both but the VaporStar just flat out has more control - it ease's the vapors in and ease's them out just like in the video, and I only scorch 1 hit in a 50 and thats if I'm really trying to get every last bit out of the dried herb.

Slow hit's for me are when I know I have got'en 90% of the Vapors out of the herb but need to get it really hot to pull that last 10% out of it. I also like the fact that its not a fully glass bong, you can take the rubber bottom off and easily clean the bong I clean mine after each use, I love starting with sparking clean glass the next time.