Depending on the hunting I am doing depends on what range finder I take. For a great all in one unit you cant beat the G7 BR2. I have owned and used most talked about on this thread. It is a awesome tool. It helped me take many big game animals this last season. While its a bit bulky that comes with all the tech in it and well worth the size and weight in my pack.
If I am archery hunting or muzzleloader hunting. I still use my leupold rx1000.