The P1 XR took a few dives to learn what works best for me. Hurricane mode made it easy getting through strong currents. The XR battery lasted multiple dives, best not to rely on it when needed or when you just want to coast along and conserve air. The P1 XR has perfect buoyancy with the compensator sleeve, it feels light enough at all depths to be convenient, close to the body, and not in the way. Checked luggage at TSA had no problem with the 160 kh with my carry on. Charging it takes 4+ hours to fully charge.