Plinker. There's some good scopes out there (that don't cost too much); that have proven themselves. We try to inform members of what specific models they can buy TODAY, and will work with PROVEN LONG LIFE, on the springers, or the NPs, at different power levels. Brand name is no insurance of performance. It's more that we have been able to sort out specific models, that prove to be effective...over years of service. It's a tough nut, and if you have specific models you could suggest that have lasted for a long time,...