Here is my (WIP) collection of cameras, old and new! I will be frank, if you asked me the differences between each one, why I bought them or which one I'd recommend, I could not tell you. While I do photography for a living, I would say my skills are mostly in the "feeling" category. I just feel them out and if I like them I like them. I think it's okay to be casual about your hobbies, and even casual about your profession. It's what keeps me happy. I save my memory space for other things, like niche trivia about textiles and memorizing pantone colors.