Yes the only real differences are the ergonomics with these more recent lenses. they all perform quite well for enlarging in the darkroom, and it just depends if you like to turn to the left or the to the right to stop down, if you like illuminated numbers and what color you like them illuminated to, if you like the option to turn off half click stops and have a totally variable aperture, or if you like a full open/stop down lever for focusing (though you should always try to focus at the aperture you are exposing with to counter any focus shift).

If you really wanted to delve into it, I suggest googling up some macro tests, with color macro work on enlarger lenses you can see slight differences in the reproduction of images and colors which may be an indication to how well they are corrected. (then again you might be seeing sample variation from lens to lens)