I've had a KIA for over a month and feel ready to report on it. I purchased mine on Ebay for under $100. I have used one other vape and then only a couple of times, so my report must be taken in that context.
Cons:
Weed is sucked up the pipe. The makers threw in some metal screens, which are not mentioned in their literature. The screens help a little, not much. The bowl is narrow, rounded, deep, and sits on its side. It?s hard to get a screen to stay in place. If you knock the bowl with your finger to shake up the herb, the screen moves. I?ve experimented with dropping a pebble in the bowl. The pebble helps. The only thing that works perfectly is bandage gauze on the mouthpiece, but you feel as if you are sucking on your ?blankey.?
Unit and glass bowl quickly get hot. If you bought the Kia, as I did because of its ?stealth? capabilities, you have to lock it up hot when you are done smoking or risk letting it cool and forget to put it away so your kids find it. I leave it open and sort of hide it and always forget to close it.
I have been unable to figure out how to smoke all of the goodness out of weed without burning it. Inevitably, the weed turns black, and I inhale smoke.
The power cord is under the unit and not detachable, contrary to what pictures show. Consequently, either you have to run the cord under the hinge, which is a pain, or have it dangle in front of the unit. Not very elegant.
Pro:
It gets me high more efficiently than any other device I?ve used. It takes remarkably little weed to do the job.
Conclusion:
If I had it to do over again, I?d spend more and get something better. I think I know why Kia can sell their units for so much below list ($220): They are still making a profit. The materials look quite cheap--thin metal, medical supply store whip, cheap power cord. . .