Hi folks. I have a chance to buy a Zone VI 8x10 - asking price is $1750.

a) is it worth that much?
b) I read that tilt and rise and fall are the same knob - true?
c) how would it compare with a Tachihara 8x10? (I have a 4x5 Tachi and love it)
d) anything I should be aware of? Any weird things about it? I like the 32in extension (finally would be able to put my 24in lenses to good portrait use...), but hear it's heavy (though I don't plan on hiking with it)

Thank you!