I know the guys that have had good success/experience with Sig have absolutely loved them. I'm in the opposite camp right now, and after my experience with my brand new 2200 rangefinder I wouldn't trust this fancy new BDX setup one bit. I sure got a lemon. I will give them the chance to make it right, but have been less then impressed with their customer service up to this point.
After I started asking around to others that I know have bought Sig rangefinders, I have spoken to (2) others, just in my small group of hunting connections, that have also had to send theirs back as well for poor performance. It seems their is a pretty extreme variability in quality from unit to unit; and they admitted as much to me on the phone.
Take that for what it's worth.