C.
Nathan,
If I were given the free choice today, C. I have a Crown Pump Organ with ten stops, and it works like a new one. It does not have the coveted Sub Bass, but the Bass Coupler does a very nice job. Although I don't play this organ too much, I wouldn't part with it for anything. I expect it will play long after my electronics have ceased to function. My Crown was literally reborn from the dump in 1994. So it rose from the ashes like the Phoenix.
The pipe organ would be my next choice, but I prefer pipe organs with two manuals.
And now, I know you didn't ask for an essay, but my love/hate relationship with the B3, C3's since I have been a church organist. I have mentioned there are many other Hammond models I had rather play. No, I would not want a B3. I have not mentioned that back when I played Hammond before Leslie speakers became so widely used with them, it seems some vibrato had to be on all the time for the organ to sound tolerable. I used V1, and C1 one the most, a bit of V2.
However, those wanna be so called church organists who used the V3 vibrato on everything was just unbearable. Such a "twitter plaited, nervous sound" that tones were just mechanically torn to pieces. Such a sound to be was "like a Cornet V in drag" as one fellow organist described these sounds. I do agree with him 100%.
James