I have and use a T5. Up until just recently it was my "go-to" mod. I loved the darn thing. I've run the 75w update since the released it. FWIW, there wasn't actually a problem with the update. It worked exactly how they wanted it to. The "problem" with fried mods were people not respecting the 10A limit the wiring inside has. Now granted, they should have limited it in software to not exceed it, but I dunno.... It's kinda like a redline on a high end sports car... If I run it down the road and never shift out of 1st gear, do 4000RPM above redline and the motor blows on me, can I really say it was all their fault for not putting a rev limiter on it? Maybe, but I dunno... I just have a hard time with faulting them on it.. If I know my engine is only capable of turning at 8000RPM, then I'm not going to exceed it.... *shrug* Anyway, the ones that "fried" their mods were the ones running super low ohm builds and cranked it to 75 watts as soon as they completed the update. I run mine at 75 watts often and have no problems with it at all. But when I do I never do so on a build under about .8 ohms... So I never exceed the 10A limit.
As for the comparison, to be completely and totally honest, I can't remember now, but when I first got it I did do some tests on the wattage output. The reason I did was because it seemed so much "smoother" than other mods at the same wattage. It still hit like a freight train, yet it just seemed very "smooth"... Can't really describe it right... Anyway, I used an inline voltmeter because I wanted to make sure it was actually outputting what it said it was and I don't remember exactly what the figures were, but if they weren't accurate I would certainly remember.
So I'm guessing the T5, or at least my T5 doesn't have that problem. On the other hand, that test was also done before the firmware update which "improved battery life", so it's possible something was changed then. If I get a chance I'll have to test it now with the update and see if it's still accurate.
It sucks that the T6 and T8 are so far off... I was actually eyeing the T8 pretty heavily until seeing these reports.