What about going back to a possible "happy medium" - the 5x7"?
The cameras aren't too big, the film's cheaper than 8x10", and you can use a 4x5 reducing back without feeling like a tw@t

Plenty of lenses around too.
Ok, I'm thinking more about this now. My Seneca has front rise/fall/shift, rear tilt/swing. How much do I need front tilt? Really? Having never used it, I guess I don't know if I am missing it.
Say I don't need it: Then I've got the 5x7 with associated glass (mostly the 121 and 210) and the Graflok with the same lenses. Can shoot a lot with that. And not feel like a tw@t doing it, though I'm not sure what that means... :p
The money from the 8x10 sales could buy a lot film, or even a good long zoom for the 20D. Hmm... :rolleyes:
With back tilts and front rise 'n fall, you can fake front tilts. Messy, but it works.
A definition of a tw@t can be found
here 