Thanks for the info Ian. The St Ives images I was thinking of are here and here. My Devon pic is here.
You're right that they are all 35mm though and probably not in the same league as you refer to.
MF is something I've wanted to move to for a while but times are hard in the Smith household and it's taken me a couple of years to build up my F5 rig to what it is without now reinvesting in MF bodies and lenses. I realise it's necessary for serious landscape work, but justifying the cost to the wife is another matter!