This has all been enormously useful, thanks so much to everyone.
E.G. is very much in agreement with Kicky about Macs as a general concept, but has also already been helped by Craven before and appreciates his advice (as I do.)
Gonna keep following these links (the Dell flat screen monitor is much groovier than I expected) and mull a bit. Then may well be coming back to ask for more specifics.
This is all really encouraging, though! Good stuff out there.