Acoustic piano? Good advice, if you have the space. Unfortunately, I have to settle for a digital piano. After loking arund I settled o a Korg N1 (lots of bells and whistles). I like the action, but service has been miserable, and it arrived damaged.
I'd recommend Technics, they make a lot of junk but this has recently changed with one of their new releases. They make a good 88 key weighted action that is relatively inexpensive and has a tolerable sound and feel. Rolands are road-worthy, but many people complain that the decay on the voicing sounds mettalic and distorted. Kurzweils are often overpriced, but I've yet to hear a bad one. Yamahas just do personally appeal to me.
Be prepared to spend a bit on a good acoustic (keyboard) amp as well. Good luck.
Lucius