It's not the most famous item, though, with processors, memory, motherboards, graphic cards and hard drives/solid state drives fighting for the spotlight...
Anyway, here are a couple of links that validate both my experience, observation, and yes -- blunders, too.
Titles should be self-explanatory.
- PC Power Consumption: How Many Watts Do We Need?
- The Big Power Supply Guide - Brands
- Gold and Bronze: Seasonic Power Supply Units Roundup
- Plus these couple of forum threads that show a good discussion on both PSU brands in general and specific models of PSUs.
Hope you find these links useful!