I use beer coolers to sweat large amounts.
Bird, I'm not making fun of you but using "beer coolers" is the ultimate CANADIAN solution to the problem. Did you learn that from Trailer Park Boys, The Red Green Show or Bob and Doug McKenzie on the old SCTV? On another matter, would you be my MP? Because you've already demonstrated you're smarter and more Canadian than my current MP.
The only mention of a hygrometer in this thread is by Big L. I would think that where you live -- based on the fact that humidity levels swing so wildly season to season -- one of those is mandatory. At least it takes the guess work out of the equation. The amount of time it takes to dry properly in July is going to differ greatly from January. After reading The Perfect Cure on here, I bought a good Calibre IV on Ebay and supplement it with cheap ones ($3) from Canadian Tire. (While you're there, check out the beer coolers). Calibrate the cheap ones against the Calibre IV. If you know you have it in the right "zone," then at least you can cross that issue of your list.
I also agree that it depends on the strain, genetics, maybe even the individual plant. I have a Mango plant that nothing else compares to.
Of course, there's always another possibility: maybe the aroma of the plants is being overpowered by the stench of Rob Ford? I have the same problem where I live, only it's the ugly smell of Stephen Harper, more overpowering -- but not in a good way -- than your best skunk strain.