Likes: small size, light weight, thin profile with Elmar 50/3.5, 1.5x magnified RF, Knob winding (no lever to poke my right eye out), the looks, chicks & old guys magnet, still serviceable, pretty much everything other than the things listed below.
Dislikes: Small VF w/o parallax correction (other than IIIg), louder shutter compared to M, no strap eyelets on older ones (unless retrofitted), 1m close focus, need to cut film (or other tricks), shutter speed dial moves during exposure.
All in all, my IIIf still beats most of the cameras I have and had in many aspects for my use.
None of the dislikes are critical enough for me to quit shooting Barnacks. If I could change ONE thing on Barnack, I'd like the shutter sound as quiet as DS M3. I still regret selling the SS converted DS M3 I had when it coes to shutter sound.