Yes, but (don't you hate that word?)
Thanks for that... I had just decided to spend my money on something else. Hmmm...
Photoshop and InDesign had a "crash on quit" problem in High Sierra that was solved by adding .bak to one folder and moving another (amazing what you can find on the internet). I no longer do anything processor intensive, so I'm not too worried about that aspect. I would like to have the latest equipment when I spend the money, so I think I'll wait until the end of October and see what shakes.
I've even had a look at the Mac Mini and wondered if that's all I need these days.
Thanks, all, for your input.