Regarding the 23 1.4: I had it, and wanted to love it badly, but never did. Had it for ~ 3 years, and shot it a ton. I've made good with the rokinon 12mm, 18-55, 27 pancake, 35 1.4, 56, 50-230, Minolta 55... just never got to a place where I "got" the value proposition of that big 23. Huge...