Good info. Was looking at the holosun 512c over the last week but for 100 bucks more I can have the aimpoint pro. Hard choice since the holosun has so much going for it, but the aimpoint has the track record. Threw out eotech since I've never had great luck with them, personally. Did get a "cheap" new light/laser combo for the vp9 this weekend. So far I like it for the size, but the 500 lumen is a step down from what I've been running. I'm sure I'll adjust and I prefer this profile.