That is an interesting unit, $850 seemingly getting you a 2800 watt (3100 peak) generator, with not only electric start (making remote start an easy mod), but also with a factory propane conversion. Oh, and a 30amp hookup. Add all those things together and make it a Honda, and you're looking at $3400...so what's the catch?
Hard to say for certain...I was curious enough to search reviews and couldn't find many, but the ones out there are positive. I think a few things are a given though:
1) This will be a noisy unit...I don't believe the couple people saying it's as quiet as a Honda (or Yamaha for that matter).
2) Parts and components will be of lesser quality...this isn't going to be the unit that runs every day without problems.
3) The propane option is nice...if I were to buy this, I would never put a drop of gas in it and go 100% propane. Propane won't gum up carbs and has no problems if unit sits unuesed for extended period.
4) The 2800/3100 peak watts is likely a lie, but also likely not to matter for the average mobile user.
Wish I knew someone that had this thing, I find it a bit tempting...