Dan,
I agree with the others who have mentioned Bob Lee. Very generous site window, and if you are looking for more mass in the riser then the Bicentennial model might be something to consider. I had one and it was right up there in performance and shootability.
The Zippers have a larger site window too. The one I had had a very comfortable pistol grip and was very quiet. What really surprised me about the Zipper was how light in the hand it was for a 3 piece bow. I also had a RER, and it too was a great performer and looker with a great grip and longer site window. Lots of good choices out there.