Taken with a 5D and the EF 50mm f/2.5 Compact-Macro ...
I was very near buying this very good iq lens when I wanted a macro with *less* working distance (100mm on crop is rather long) - but the "80's" build quality and the horrible af motor scared me off... but I have to admit I have some sympathy for this oddball lens, other than the "just crappy" 50/1.8.
When I was unsatisfied with the manual focus on my 50/1.8 mk2, I was torn between the 50/1.4 and the 50/2.5 macro. I tried both in the shop, and bought the macro when I realised it's build and handling is so far ahead of the 1.8 mk2. Not only is the manual focus much better, but the ring declutches when switched to AF so there is no danger of damaging the motor like on the 1.8 mk2. I wish it had full time override, but the long travel manual focussing wins it space in my setup. It's not up to the quality of my old Olympus OM lenses, but nothing short of an L or a Zeiss will be.
There is more than enough selective focus at f/2.5, especially given the ability to focus much closer. The lens is more than fast enough for available light indoors, when used with a modern sensor. I use this as a standard 50, with the extra flexibility of being able to go closer than 45cm. For that reason, I wouldn't want to swap it even for a 50/1.2L
I hope that the new 50 follows this pattern, but with IS. I might be tempted to upgrade if I can have full time manual override, IS, and quieter AF, together with the good depth of field scale, 30cm minimum focus and the same lack of distortion as the 50/2.5 macro.