I had a Bushy Dissapator. I liked it when I first got it, but I grew to dislike it pretty quick. Mine has the heavy barrel, which I though was the only way they came, or at least when I got mine they were. I've never seen one with a "light" barrel. The rifle is muzzle heavy and just heavy in general.
Even with the heavy target type barrel, it wasnt all that accurate. Of all the AR's I own or have owned, it was the least accurate. It also had some function issues when I first got it, but it got better.
I dont know if the few added inches of sight radius is really an issue. I have 16" mid length guns that shoot better using the iron sights. Truth be told, the only "fixed" iron sighted AR I shoot these days is my old SP1. I prefer flattops with Aimpoints (with cowitnessed BUIS) and/or a Leupold 1.5x5 over the irons. The flat tops are way more versatile, and the medium profile barrels much handier. The rifle is also more balanced, both weight and look wise with the carbine/mid length furniture.