natopotato
i don't have the thermoengine so i can't speak from experience.
but truth is, the thermoengine does give lower temps than actual because of it's design, not to say this isn't a good hs, it's pretty good, but not superior to the WBK, it's equivalent in my opinion.
the Gladiator or the Golden gate w/ the 38 CFM delta is a step above the WBK and thermoengine in my opinion.
if you have the money, i'd recommend buying both the WBK and the Golden gate, (costs you less than the SK6 or the Glaciator) and run some of your own tests.