I'm also leery of buying a PWM off Amazon for 20 bucks. I can't seem to find a heavy duty one but I have read that having good airflow with a fan for the device is the key to long-term usage.

https://www.amazon.com/gp/aw/d/B0837DZ1CT/ref=ox_sc_saved_image_1?smid=A1SRD8N3SJ7WHI&psc=1