it should not matter at all.
some will provide more current to the battery than others,

I have 3 different brands of the wireless chargers, and while they all are a bit finicky as to the exact position required for the phone to lay on top of it, they all work.

Mine are just some that I bought off of the web, I try to research that they have good reviews, and provide a high rate of charge. and more importantly, make sure that they state that they will charge thru at least 8 mm of free airspace. if you don't, and a case is on the phone, they won't connect and charge.