I am looking at a new scope for my rifle in 6.5 creedmoor. The two scopes i like are the 4-16x44 viper hst and Sig Sierra 3 bdx 4.5-14x44. I am very intrigued by the Sig BDX scope/rangefinder combo, but wary of reviews saying sync issues and cold weather performance battery wise. I am also leary of the quality of the glass on the SIG, and viability of the reticle at longer ranges. But the system seems really cool. Does anyone have any experience with the Sig system and any feedback.