I use QHY cameras because I like the external desiccant tube to recharge or replace the desiccant rather than opening up the camera.  I live in a high humidity environment.

I also liked that all the cooled cameras always came with a dew heater for the window.  I own several QHY cameras and the support I get from them has been outstanding.  Via Chat on Facebook and via email (This email address is being protected from spambots. You need JavaScript enabled to view it.).