Wow, great find! I would assume with the Yamaha engine, there's no difference between this and the actual Yamaha branded generator?
Any thoughts on the Ryobi or Wen or any others that are slightly cheaper than the Yamaha and Honda?
It's a little deceiving. From what I understand, i's a licensed engine, so Yamaha provided all the specs/diagrams and allowed use of its branding. So, it's not built by Yamaha but it's basically the same thing. It's a little on the noisy side (but within AFM regulations)
I picked up a pair of them from Costco a couple months back, to run warmers and my AC in my trailer. They worked well but when the plug for the parallel kit pulled itself out when I put them away, I decided to return it in favor of a single, larger genny. Costco was, as usual, awesome about the warranty/return.