I was really focussing on uncle Dave, But to tell you from what I understand-you MUST check out Rolands FP 9. It's a little expensive, but I understand it is very special.(portable)
If you can allow yourself the space of a small encased upright piano, then even much better still might be Rolands kr575-if they have that model near you. I went crazy over the two piano tones (with their variations)
and the perfect touch(of kr575). I think it is the nearest you can get to a superb concert Steinway, and the other tone-like a Bechshtein (I think).
It is also a great synth-which I don't know too much about-but that is one reason why it is a bit expensive.
I myself am trying to buy the last model in Israel before it is sold. I just have to find some creative way how to pay for it. I might in fact miss it-hope not.
I have a post here a few items below asking what other people think, and if they agree with me. I don't see many replies yet.
There may be different models which are similar-but available in different places.
Only Roland? well I've heard from various experts or semi-experts, and it seems that Rolands are one of the best, and certainly best value for money. And that Yamaha is not so great for piano.
I tried out a p-80, and it looks to me-like what I've heard about Yamaha in general. Maybe it's better than the others!
The price is certainly not bad.
The only other Yamaha I tried was the lovely synth grand. It's very nice but extremely expensive, and big. The KR575 is almost half the price and seems better also
in many ways. That's my 2 cents.
Good luck!