I am trying to get a better sight picture on my P30SK. The luminova sights are challenging to use in low light (not dark) unless you are constantly charging them. I have 51 year old eyes and wear bifocals. I am looking for the brightest possible sights. I just tried a set of Truglo TFX's, and while they are nice in bright conditions or total darkness, they really fall short in low light conditions. Any suggestions out there? Thanks!