Top positive review
Leviton vs Topgreener
Reviewed in the United States on February 11, 2016
I've been retrofitting the old-school duplex outlets in our house with both Leviton and Topgreener USB outlets, along with Leviton Decorated Plus commercial grade outlets.
I can't say much more than what other reviewers wrote, so I'll touch on the differences between the two top sellers.
Quality - Leviton gets the edge. They're both made in China, and both UL certified. Neither feels cheap, unlike the rebranded no-name-odd-wallplate outlets that are all over the place here. (I think the Topgreener is also a rebranded generic outlet, but it's not as ubiquitous as the oddball $12 outlets.} Still, the Leviton feels a little bit more polished and solid. Plug action is a bit smoother. It's not a rebranded generic outlet. It's a brand you know.
Appearance - tie. The surface of the Leviton is smooth, but it projects a few millimeters from a standard Decora/decorator wallplate. Spacers or washers help a bit, as does using a Lutron Claro wallplate. The surface of the Topgreener is a bit rougher, but it sits flush with a standard wallplate.
Accessories - Topgreener. It comes with both a standard decorator wallplate, and a nice clone of the otherwise pricey Lutron Claro wallplate. The Leviton doesn't have any added wallplates.
Ease of installation - tie. Both allow traditional side wiring, and push-in screw-secured rear wiring, just like most commercial grade outlets.
Charging power - I'll edit this is someone buys me a USB tester.
Packaging . Topgreener. A simple cardboard box, with polished branding/graphics and a cellophane window. The Leviton comes in a clamshell/cardboard hybrid package that's not difficult to open, but you're still dealing with plastic.
Neither hum or buzz. Neither can be wired for a half hot switched outlet. Neither have an indicator light. Both have instructions in readable English. (and, for the Leviton, Spanish and Fremch.).
The verdict - a draw, really. If you don't mind paying a bit extra for wallplates, and don't mind that it takes some work to get the face flush, and are brand conscious, go with Leviton. If you're looking for bang for the buck, and you're using Lutron Claro wallplates (and draining your checking account in the process), Topgreener has the edge.