Quick prime comparison: help

I have 31, 43 and 77mm but cannot compare them to the other lenses you´re talking about as I don´t have any practical experience of those. I am very satisfied with my lenses – and Fa100mm too btw – and happy that I had the money to go for those lenses. That being said I would think for many purposes, you can do just as good with the lenses you´re talking about. In my own case these expensive lenses are often overkill as I am into heavy post processing.  If I should only choose one of those three I would choose 31mm – but we all have different preferences

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