I had an Iolite handheld for a while. Took more than a handful of uses to start getting good hits (have to let it warm up more than your patience allows).. even then I noticed a difference. Could have been mental, like growhand said, placebo is very strong. Anyway, I stopped using the Iolite for one main reason, it was butane powered. I probably would use an electric one from time to time, but for now, pipes and bongs.