I am quite fond of the mophie one at the Apple store. It’s extremely solid and well-built. There’s no cheap plastic, vents, fans, or anything like that. And it works perfectly. Haven’t had a single disconnect, which I hear people complaining about in other wireless threads. And it seems to have the smallest form factor of any that I looked at when I was at Best Buy. It’s just a very impressive piece of hardware.
https://store.apple.com/xc/product/HL812ZM/A
I also agree this is an excellent charger, I have two.