All good, John.
I think if you were going to go for anything Apple, you'd want to get a Laptop.
However as you said above, the cost and the software limitations make a decision like this very hard to make.

One thing that really annoys me about computers, is that you can't network different types together, I mean, I have 1 XP computer, 1 W7 computer, 1 Linux computer and my (work) iPad, NONE of these computers will talk to any of the others, not even the XP one and the W7 one, which I think is nothing short of rediculous, the only way you can share files between them all is with a USB stick, which the iPad doesn't have a port for anyway.
I thought it was all supposed to be about connectivity these days?