My preference on film (and lately FF) used to be prime based 28/43/135, I've swapped the 28 for the FA20-35 as this is where most of my travel shooting ends up and I can manage well enough with just this lens if necessary. Logically a 50 sits better with it than the 43 (but I can't leave it at home). I don't need anything between 43 and 135 (the M135/3.5 is small and compact). I should probably look for a 150 or 200 to replace the 135, but it's compact and lightweight.
With APS-C I take the DA17-70 (the only wide option I have), FA35/2 and M135. I have a DA10-17FE and think it might be useful but rarely take it. The FA 43 doesn't work for me on APS-C - it's in the middle ground of being too long & not long enough, the FA35/2 makes a good 'fast fifty' option.
Originally posted by house Running sound a city with a physically long lens is super annoying. Crowds bumping into it, lack of space in bars and restaurants etc. With a small lens the camera goes behind your arm in crowds where is well protected.
I too dislike long/heavy zooms (the DA17-70 is just about OK but I'd prefer something smaller), they get in the way, over balance the camera and are really obvious to others. I keep the camera over my shoulder tucked in behind my arm in crowds or where it might impact anything.