Thanks a lot for this advice - from what I can see then, it's either a 2000 or a 14/1600 that I'd be after.

I still like the look of the 1400 or 1600 as I could use it as a go-between (i.e use it to tweak material from the 3000 to the 7000, as well as use it for the kids schoolwork)

I'm finding it hard to find a used 2000 in good condition... obviously given the age of the instrument, that is understandable I suppose.

Oh well, the search goes on!