I bought the Holife charger along with the RAVPower 30W Turbo Charger Not sure exactly how fast it is, but I haven't noticed much difference from using a cable, so I'm more than happy with that. It also has 2 coils so you can charge your phone vertically or horizontally.
Opted against the Holife for this one instead > https://www.amazon.co.uk/gp/product/B076XYL1R3/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Supposed to be up to 10w on this but will see how it performs