Well, I ended up buy a Sig 2400. I really like most everything about the BR2500, less two things. I've had a Terrapin, so I know how well they range. I was hoping to get something with that ranging ability, coupled with ballistics in the same piece of gear. Since there weren't are first hand reviews of the BR2500, I decided to buy the Sig, since there seem to be lots of glowing reviews since it came out.
The lack of ballistics past 1400 yards was one issue for me. I shoot a lot of steel, and want to stretch that out to a mile or so in the future. Capping ballistics at 1400 yards would require me to have another solver. Which I do. I have a Kestrel 5700, but my reasoning for buy one of these is to not need two devices in the field. Secondly, I'm used to Applied Ballistics, and used to using an app to setup gun profiles. I like that feature. If I understand the way the BR2500 works correctly, everything is setup on the unit itself (which could be a benefit for some people). I just prefer the app approach.
I've had the 2400 about a week, and have been able to test it's ranging ability on objects that I also have tested with a Bushnell Elite 1-Mile and a Terrapin. The Sig 2400 is really good. Is it a Terrapin? No, it's not, but it is close. I could range virtually anything out to 2000 yds. Obviously, the larger and more reflective the object, the further it would range. The Terrapin that I had would range anything out to at least 2600 yds, some things much further. The Bushnell will give me ranges from around 800 yards on steel plates, out to 1575 on a white concrete tower, and 1200 - 1300 on tree lines and large rocks.
I haven't used the Sig in the field as of yet, so can't comment on ranging animals or on it's performance providing corrections. Setup is very easy, and it's a simple system to us. I think for all practical purposes, it ranges as close to a Terrapin as any unit I've used. I really like the size of the unit and the accessories that are provided.
I wish there would have been some reviews of the BR2500, but I guess there just aren't many in the hands of shooters yet. It looks like a very good unit.