J,
There are lots of good choices, but it depends if you are wanting a ballistic return or just distance. If you are happy with distance and angle modified distance, you have tons of choices. My personal favorite would probably be the new Leica 2400 R, but not sure that's on the shelves yet. The pre BDX Sig Kilo 2200 is another that can be had rather cheaply, but really, I think any of the offerings from decent manufacturers would do out to 800 yards. One thing to consider if you are going to shoot that far, glass matters somewhat, and a whole lot if you are shooting at the last or the very first light of the day. My son's RF is good for a long poke, but the glass is so poor that once the sun is setting, you can't see very far anyway. This is one place where Leica really excels, the glass is excellent, and I've used it well past sunset and still find it absolutely useable.
If you are wanting a ballistic return that takes into account temp, pressure etc and gives you holds, then you are more limited in what will work for you in your price range. If you are going to shoot 800 yards or better, and in that price range, you might look at the BDX models from Sig, as they are running AB ultalite and also allow you to use a custom curve. AB ultralite will give you a ballistic return to 800 yards IIRC. To get the custom curve from Leica, you will have to step up into the 2700b, and those are outside what I understand your price range is.
One thing you will want to check is to make sure of if you go with a ballistics model RF is to be sure it will work well for bowhunting. Some of the older Leicas did not work well in this regard (the minimum distances were to high etc.) and some models will always apply some ballistic curve if they are to modify the distance for angle. Can't remember which models function which way at the moment, but it's something to consider when purchasing.
HTH!
