What do YOU play against the Torre, London, Colle, Veresov, BDG, etc.?

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inject_the_venom

This is excluding anyone who plays the King's Indian most of the time-- those players don't need a different approach against most of these openings.

I am referring to someone who plays the Nimzo Indian, just for example.  That player would be ready for 1. d4 Nf6  2. c4, but what about 2. e3, 2. Bf4, 2. Nc3, etc.-- do you have a set way of meeting these openings, or do you just wing it depending on what  White is up to?