I have the Kilo 3000 BDX range finding binos, they're a fantastic piece of kit. I've never used them paired with a BDX scope or used the native AB Ultralite that's on them since I always pair them with my Kestrel 5700 Elite. That system works really well, you get super fast returns with the rangefinder and then get your dope displayed in both the binos and on your Kestrel.