Hard choice.
I want to say exactly what Suzanne R. said...
I also want to say a Linhof Super Technika 2x3 with a normal lens, or maybe a Mamiya Press Super 23, with FP4, Plus-X, or T-Max 100...
It would be very hard to leave my beloved Nikon Fs and Canon F-1's and their fast fixed-length lenses and Delta 3200 or Fuji Press 800 behind...
A 6x6 TLR and Tri-X might be perfect...
A 6x6 SLR such as a Hassy or M645 Pro TL with Tri-X would make a lot of sense as well...
I also hate to be without a view camera and film holders loaded with FP4 at my disposal...
In the end, I think I would compromise on a Graflex RB 5x7 with a normal lens, and Tri-X 320.
For film developer, HC-110.
For printing paper, Oriental VCFBII, 11x14.
For paper developer, Ilford PQ.
Enlarger: Durst or DeVere 8x10. (I know I would not have 8x10 film, but I could proof two 5x7's at once this way.)
P.S. The thread that I started was not about choosing one camera to keep, but about how strange it is that our lovely film equipment would be close to worthless if liquidated these days.