So I can't answer specifically about Coachmen, but that they are a Forest River Brand, and that's not what I would call bad news.
I also like the simplicity, and the traditional aluminum siding. While it doesn't have the fancy look of fiberglass siding, it can be more easily repaired should something go wrong.
What I would ask is which floor plan do you like specifically, and what tow vehicle and in more detail is your vehicle's payload rating? (yellow sticker in the door area).