I chose the bushnell because they offer the ARC version, basically it has an inclinometer. You have to choose rifle mode, and a ballistic group. The display than shows the ranged distance, incline, and a bullet drop for some ballistic group (useless info, unless someone here knows better). I wish they would show the line of sight distance, incline or cosine, and the corrected distance. But, it does at least have the angle so you can put it in your program, or do the math yourself.
I'm happy with the optics. I don't know why they called the unit a 1500. The furthest reading I've ever got is 1200 and something. However, it is very reliable out to 800 or so, and with a little patience (not something I have when a buck is walking across a clearing), it does well out to 1000.
All things considered, I'm happy with the unit. It's too bad Leupolds RX's didn't perform. I also have the Nikon 440, I carry bowhunting. It will consistently range to 500 yards, however the optics are simply too small. I am a fan of Nikon, and believe the 1200 would posess better ranging ability than the bushnells (at least they would be labeled consistently with thier performance). However, they don't offer an inclinometer.