Well, here's the way I see it. The Omega D2 (or D II) is a fine enlarger. Heavy, and stable, but large; it will handle anything from a subminiature negative to a full 4x5. I use a D4 myself, which is at its core, a beefed up D II with autofocus and have no complaints with it. It is sturdy and does what I need it to do. If you plan to ever shoot 4x5, this is the machine you want to keep. Modifying a smaller enlarger to do the work will be problematic at best, and an unmitigated disaster at worst. The D II will do it all without raising a sweat. All you need are the correct, and reasonably easy to find, accessories and you're good to go.