My friend has the HG 10x52 and I have the BD 10x42 asph's as far as bino's go, and we both really like them. The HG's share the same glass as the riflescopes...SCHOTT. This glass is excellent and compares to Zeiss and elite 6500 or better. I would highly recommend them seeing that the warranty is the same with bino's and the scopes. Definitely my next scope will be the ZA-5 3-15x42 with the BDC reticle!