^^^ myself and 3 other guys on our team use the ESS nvg profile goggles with Turbo fan and never had any issues besides the battery replacements. We all got the thermal lens and have never ran into an issue of fogging either . Most of the time I run around with the fan off or on low setting and they still don't fog. Worst case scenerio I have had was, I use the high setting for like 2mins when its really humid out but thats honestly rare. I did find with the original lens its tends to fog a bit without using the high setting for the fan but it was a simple fix with the $30 thermal lens.
South Island Rangers Airsoft Club- President
Victoria Area Age Verifier