All great points made above. Just another viewpoint from someone who owns a Model D and a LP…
Since you long for a Mini “D”, if you have the cash available to do regular upkeep on the Model D, and if you have a good tech around, then go with the Model D. Nothing else sounds quite like it. My Model D is in PRISTINE condition (not mint, as per Keven Lightner
) and has no operating problems. It works fine and I have never had a problem with it. However, I fear the day that something goes wrong with it; in fact I bought another Mini for spare parts, but ended up selling it to rustle up the cash for a new mixer and the LP. I use it on a limited basis to “keep the hours off” in order to prevent any problems.
The Voyager does a TON more than the Model D, with easy expansion capabilities via Moogerfoogers, so if you are looking for semi-modular synth capabilities, go with the Voyager. If you are looking for that old time “Moog sound” that you have heard over the years, the Voyager comes close but it does sound different than the Model D.
I love the LP, and it has taken over for the Model D in my studio, more to protect my Model D. If I want that Wakeman lead sound, however, while the LP comes close (very close), I turn to the Model D.
If you are a Moog freak (aren’t most of us on this forum?) you probably won’t be happy without owning all three. If you are looking for Moog type sounds, your software synths may be enough to keep you happy.
For me, if I was going to purchase just one, I would probably buy the Voyager. Does everything that the others do, and more, it is new, it is easy to repair, and sounds close enough to the Model D to make most people happy.
What a great conundrum to have!! You can’t lose with any of the choices.