your temp depends on lots of factors, but the one i see as a necessary constant is how dry is the product you are trying to vaporize?

if it is too dry it will burn easily, so higher temps should be avoided
if it is too moist it wont vape easily and as you turn up the temp all you are doing is drying out the material and gunking up your vape
if the moisture content is somewhere in between you only need to play around in the safe zone (for me 355-392 F) to get your vape on.

all that being said... if you are getting flavor when you draw you are inhaling the vaporized products from the material you are vaporizing

just remember you need to learn the capabilities of your vaporizer (trial and error along with some reviews on the internet should help) to maximize the experience. if you are expecting big clouds bellowing when you exhale then perhaps vaping is not for you... yes you can make vapor clouds when exhaling, but usually when they are big there is some products of combustion (ie... smoke) in the stream...

one last thing...

if vaping is for you, save up your cash and buy a good vaporizer. a lot of the box style vaporizers use a soldering iron encased in glass for the heating element. who knows what kind of crap you are inhaling using one of those?

also remember, there are very few vaporizers that accurately display airtemp. they are usually in the high end units, where the lower price one usually read the temp near the heating element

^