Im keeping my eyes out for a good deal on a used leigh dovetail jig. The problem is that there are 4 different 24 models out there: Super 24, D4R Pro, D4R (no longer in production), D4 (no longer in production). I have compared the various models on the leigh website but dont see any huge differences. They all handle the same size stock, they all d0 variable spaced half blind and through dovetails. It seems the main differences are in the construction and some of the other joint options.
So for someone whose primary focus is to do variable spaced dovetails will any of this models do, or is there one I should always avoid? I have a sickness of wanting to have the latest model all the time, but is that really necessary?
Thanks!