Thanks Towers, Richard, MrC et al. I' really benefiting from this increasingly constructive debate.
Believe it or not I'm making notes on a big piece of paper (which, according to the first law of Making Notes on Paper will turn out to be too small) and when Summer turns to Winter over that long week-end in October we call Autumn I'll make a decision.
I've decided one thing, I'll always have a PC with the masses of kit and knowledge I have. But for the Main workhorse of Maison Fobs I could just go for the Mac.... But the G5 is awfully expensive even if those big flat screens are so sexy.
My Dentist Chum has both in his surgery and chose the Mac for home. I have to trust his judgement now, don't I...?