nospam wrote, on Fri, 04 Dec 2015 14:35:20 -0500:

build quality and reliability should be a priority, not wattage.

There is absolutely no way to tell the build quality.
Absolutely impossible without an oscilloscope which you can't
expect a consumer to have, and you can't even expect a consumer
to tell the build quality.

So what you suggest, while utopian, is impossible for a consumer.

They are all UL approved.

They are all of a "brand" name.
(What brand name would you choose anyway since Apple doesn't make them?)

They are all sold by brand name stores (Amazon, Frys, etc.)
http://www.frys.com/product/8423918
http://www.amazon.com/Hype-Compact-A.../dp/B00T3FQBHO
http://www.amazon.com/Hausbell-35W-H.../dp/B00NUREFMO

You suggest something that is patently impossible for a consumer to do.

This is all the consumer has for quality:
Guaranteed Safety:UL certified design(No:E310745).
Unibody design,size:8.9×7.3×3.3cm,Industrial-grade
materials and premium circuitry ensure lifetime reliability.