ScottZeagle:I know quite a few people who have matched up our BP with their exsisting Ranger bladders and like the system just fine, but I don't think they are ScubaBoard members so their opinions are not heard here, of course.
Actually, if you search ScubaBoard with "Ranger backplate", you get a few posts of people who have mated a Ranger with a backplate, Zeagle and non-Zeagle brand. Here's a post: Using Ranger wings with a back plate
Since I have a unused Ranger, I may take the bladder and match it up to one of my backplates. If I do, I'll report back to the group. But since I thought that the Ranger wing worked quite well (though a little bulky for single tank diving), I can't forsee any issues. Just have to figure out how to mount it correctly.