Another one you might consider is www.ezcleancoops.com by Leisure Woods. I've been debating getting one for a while now, and just went for it. At this time of year, the wait is 4 weeks, but it comes painted, shingled and you just have to attach the four walls, nest box and roof. I've been looking high and low for any BYCers or other chicken enthusiasts who might have experience with their coops but have only found a handful. I figured I'd take the leap and try it out! They are a bit more expensive than the Horizon Structures/amish-built coops, but the price includes shipping which is nice. The one piece of feedback I've heard from the Horizon coops is that they don't have adequate ventilation. Sounds like some have taken matters into their own hands and added more ventilation!
