Help picking a wireless charger

I have an Anker that was reasonably priced and works well.

Here is a page of wireless chargers that Apple recommends (and sells): https://www.apple.com/shop/iphone/iphone-accessories/wireless-chargers

After seeing that page I may get a new one.

I've been pleased with the Mophie chargers I've purchased, have a friend who swears by the Griffin. Make sure they are Qi certified.