Basically everything I do except VST-based music production could be done on my 1GHz TiBook without any real trouble; the only real reason it's not is because I prefer Windows XP to Mac OS X. YouTube is balky on anything above 240p, but eh, it's not that essential. Haven't made any real attempts at MorphOS yet, but who knows, that might fit the bill.
I prefer Mac OSX; it has no stupid task bar, it has a menu bar at the top of the screen where I expect it and the close gadget is in the correct corner of the windows... Also my disks/USB drives appear on the desktop when I plug them in and finally, windows don't autorise to the top when I just want to drag them around...
Put simply, it has the Amiga like behaviours I like
x