I had purchased from Amazon for my Nexus 4 this one:
GMYLE(TM) White enabled Wireless Charging Pad Charger with 1000mA (1A) output & DC Port (US Plug) for Standard Nokia Lumia 920/920T/925/928/1020, LG Google Nexus 4/5/7 FHD, Samsung Galaxy S4, iPhone 5
by GMYLE
Before anyone gets their knickers in a wad over the charger power cable, they have a model for a little bit more that uses microUSB as a source. I have been 100% happy with this one, and the reviews posted must have included some older versions. I am getting a couple more to put around the house (office, bedroom etc) and at my work office. I figure if they last half as long as the big names I'm still ahead. Charges almost as fast as the wall wart through a Spigen Slim Armor and the Spigen Slim Ultra (we're a two Nexus 5 family!). Happy hunting!