I just replaced the bushnell pro scout 450 with the elite 1500 arc. I couldnt get the 450 to range with consistency past 180 yards so I sold it. I chose the 1500 partly because it was on sale- the other in my selection was the Nikon monarch.
I've had great luck with my Nikon Monarch 800. What you need to watch in the fine print is max rating to a nonreflective target. I once ranged a white building at over 1000 yards with mine, but if it had fur on it it would've been a lot less. It's sort of like the "30 mile" GMRS radios -- some manufacturers will throw out a performance number, but when you peel it back you find that it's under optimum conditions -- in the case of a rangefinder, a highly reflective target in low light on a very clear day with no moisture or dust in the air. When I shopped for my rangefinder, I went with what I thought would be the maximum range I'd be comfortable taking a shot from under most field conditions, added some "stalking" range, and then doubled it to account for atmospherics and target reflectivity.
Try to put your tree stand in a tree with plenty of background cover, keep the prevailing winds for that time of the year to your face, and take care of those pesky squeaks and creaks your stand may have developed while sitting in the shed. A good treestand lube can be made by heating petroleum jelly until it reaches a liquid form. Some hunters have reported success by including a cover scent in this mixture before applying it to their stands.