Hi
@Punchman28! This is country-related, since we have various brands & models around the globe, but basically here are the criterias you should look for: good pumping capacity (amount of water extracted per hour), coverage (surface covered by the engine), power (energy cost), drain system (how to get rid of the extracted water), robustness (how solid it looks), and last but not least, the humidistat function (capacity to automatically regulates the humidity, through a dedicated sensor or via an external controller). Depending on your needs (your current controller, your budget...) you will have to benchmark what's available around you. After looking at my local growshops I finally got myself a home dehumidifier with adjustable settings, my tent controller is only able to handle the exhaust fan and I didn't want to change it, in the end I'm very happy with the home dehumidifier (cost~300$), the only downside --> it usually increases the temp by 2-3°C. Hope this will help, let me know in the comments section if you need any further information, and happy growing! 👊