Check the age of the posts you have read. I can't remember clearly but I believe earlier versions of the VPI 16.5 had overheating issues, but were resolved (or at least reduced) a long time ago by VPI.
I've had the 16.5 for about 7 years and have not had an overheating problem even once.
I've had the 16.5 for about 7 years and have not had an overheating problem even once.