Could you give us some details of what you want? Mag range? Features? Reticle type?
Optically the BD, Monach and Elite are all pretty close to me. I have a BD and as much as I like it (built like a tank), they are probably overpriced compared to the Nikon and Bushnell. I haven't seen a ZA5 yet, but have heard good things about them.
I aslo had an Elite 4200. It was a great scope and good optics. I gave it to my BIL for his gun. I like the Burris just because I have torture tested mine (FFII, BD, and XTR) and they have not had one issue.
I would like to get ahold of a ZA5. From the review, seems like great optics for the price.