After years of chasing lenses of many styles and lengths, I find that I just like the "nifty-fifty" equiv of the "old days" for my daily carry about. Yes there are times when a 24-28 would be handy. But I don't like zooms or carrying around another lens or worse a bag! I have the vivitar 24mm in om mount. It is a strong lens with good optics, but it is very heavy. What is your favorite in this focal length (24/25mm).