I myself use my Falcon and indeed the TT on occasion for many things and there is nothing that I care about that they cannot do.
I mostly use CuBase ( it would be too costly to get my PC to do what I do with the Ataris ) but I also email, browse the web, write docs and do my business paperwork all on the Ataris.
That said, I recently broke my back and I can no longer go into my loft ( or climb any stairs at all ) and so Im stuck on the PCs now till I get the Ataris rehomed down here