THanks chaps.
no I don't necessarily HAVE to spend 30-40K. That happens to be the budget. In all likelihood, I will rent a back and buy the system. a year or so, if I have consistent use, I will buy a back.
Overall, if asked what my the over-arching requirement, I would say:
I want to make 2 x 1.5m prints if required for the best of my files.
Would the pentax 645D satisfy ? Your experience and opinions welcome here.
Which is the reason why I considered MF in the first place. The exhibition requires me to make large prints ( I have an allocation of 3 frames upto 2x1.5m dimensions). A few important chaps from the local art scene will attend. I have no hopes to turn professional for now (I work as a doctor), but who knows, someone might like my work.
So I rephrase. 2 x 1.5m prints: what system will satisfy ? Film is too tedious here in Oz.
Cheers chiefs.