I disagree. In my opinion, the 550 is a much better press for loading rifle ammo. Also, the 550 is simple. Hell, the 550 is Dillons best selling press for a reason. I have a 550 and a 650. I load all my pistol on the 650, but the 550 is for my rifle ammo.
I think we are saying the same thing here, maybe I just wasn't clear. The 550B is fine to load rifle on.