Dont dump the B-22 just yet. Carefully pack it away, and have it as a back-up unit. If, in the future you have the room for it, you will have a dandy dedicated 35mm or 6x6 for some quick work.
I would keep both, and probably use the B22 as a dedicated colour rig, but I physically don't have storage space for them both in the apartment. As it is, the D2 is sitting in the middle of the dining room floor until I have time to get it set up.
I don't have the D2. I have a D4, which is about the same size but a little more heavy. There's a B600 sitting in the darkroom right next to it that doesn't see much use at all. I wouldn't trade that D series enlarger for anything.
I have a much loved D-II, which used to live in a little darkroom in Carnegie Hall many years ago, where it was used for the printing of Irving Penn's work, along with several others. My father knew the two guys who ran the lab, and managed to get the enlarger from them when they closed up shop. It still works flawlessly, alongside our old Durst 606, which will be joined by a Durst Laborator 1000 with Pavelle 401 in the next few weeks.
I really do love my Omega, and can't stand the Beseler 23Cs that I work on here at school. Some of them are hideously out of alignment, and only one of them has a Schneider mounted in it. Student abuse has clearly taken its toll, but I really hate the Beseler negative carrier design, much prefer the two interlocking plates with pin cutouts and register grooves of the Omega D carriers.
Nope. Keep in mind... IF you had 6x6 negatives, which uses the exact same film, you'd be using 6x6 carrier. Provided your film doesn't dry awfully curly, you'll be fine. I never had any issues even when I crop it in such a way the actual enlargement factor is much larger than if I was printing 11x14.