I've had Trijicon's on a S&W CORE and traded for a Glock 17 with one. I've gotten very good with each of them. My problem is I love my P2K9 as my EDC and I've used it ti actually stop a robbery. However I realize I'm getting older so I want to go back to an HK. I could have my good old P2K9 V1milled, my P30L V1 milled, or get a VP 9? I always value the advice I get from folks here.