I, too, can validate the Roland A80 as a very nice piano keyboard. I've used that, as well as the Kurzweil PC88, which I have now in my own home studio. It has a lot of 'controller' faders and buttons you can setup in your DAW. I've also used Yamaha weighted keyboards, and they were all very passable for studio and live playing.
Right now, for home playing, and some live performance, I got this relatively inexpensive ($1,195 retail) Yamaha P-155 keyboard...not for the studio, but for in the house, in addition to my real piano. The keyboard feel on this instrument, is very good. You can use it through MIDI or USB. This piano feel technology is very quiet, not like the clunk from the PC88. I don't think it will work well as a controller for much except playing and inputting your MIDI tracks. I like the USB slot, too, becuase I can record a piano piece on the Yamaha, then save it to a USB dongle, and put it in the computer to transfer to logic, or whatever one uses. The keyboard is nice!
I also used to have a Roland Rhodes keyboard, which had bad sounds, and was way too heavy! However, the weighted keys were pretty darned good! It's gone now, but the PC88 has been good for the studio setup.