Until P Rose gets a chance to reply, perhaps I'll contribute here. I'm a friend who pointed her to this forum as I knew quick and helpful answers would be forthcoming!
A slab design with built in speakers was decided on, mostly for aesthetic reasons as it has less visual impact in a modest living room. Thus the FP50/80 came in to the frame as opportunities for trying things hands on were limited, and the Rolands were more available in the nearby shops. I suggested trying a competing Kawai (e.g. ES7)as I've tried their actions and liked them but they weren't available without going into London.
I've had a play on the instrument in question but I have to admit that I don't have a lot of experience with recent models -the last DP I bought was a 1991 Clavinova! So comparisons are with my acoustic Yam U3.
Action - I like it, it's perhaps slightly lighter than the U3 but it's precise and tons better than my old Clav!
Sound - Pianos are good with strong bass, perhaps a little muted in the 2 octaves or so above middle C compared to my U3 -perhaps why I preferred the Bright Piano? Only had a flick through other sounds - the Acoustic and Synth Bass sounds stood out, I've never been particularly taken with the choir/string/wood sounds on digitals (not like the strings on my an analogue 1981 ARP Quartet - but that's for another forum!)
Working out how to use the thing - I understand touch screens are out due to price constraints, but the permutations of button functions takes some getting used to! Took me a while to realise that press does not mean hold!
Overall I'm impressed, wouldn't mind one myself. http://www.pianoworld.com/forum/images/icons/default/grin.gif