I know it sounds cliche- but I always liked the sound of baby grand Steinway pianos. They just have a rich texture you dont get out of many others. I also prefer pianos that have real ivory keys, but the fake plastic stuff.

At home, I know have an upright Baldwin. Its pretty nice. It has kind of a toffee colored sound to it. Its brighter than my other baby grand, but its not quite as vibrant, naturally because its an upright.

As far as keyboards go, I have a Yamaha and I really like it better than the Korg I had. Its piano sounds are more natural and better tonal quality. I only play weighted keys, and its worth the extra money. The synthesizers are like playing on chop sticks. But they're ok for practice.