I recently bought a Yamaha P-255 stage piano, and I LOVE it. It's mostly for the dueling Piano Shows, but I like having it in my studio for quick inspiration. There's a WAY cool app that lets you customize it well beyond the panel limitations, and the on board speakers are fantastic. It's manageable for transit (38lbs), has dedicated line outs, and aux in, plus a usb music player. On board drums are limited (10 patterns) but useable, and 3 LH bass options - all great.
I played everything out there before settling on this one. The Kawai ES100 https://www.youtube.com/watch?v=Ft47x20F9cg was a close second, but had a wimpy sound and lighter, less accurate key feel.
The Yamaha P-115 was really nice, https://www.youtube.com/watch?v=dxDsTNbK2HE, and a little lighter, but the key feel and sound system were lacking. Also misses the app connection and music player.
The Roland FP30 https://www.youtube.com/watch?v=sDjokwNhu4c was also in the running, but based on key touch, sound system, and versatility - I went with the higher end piece.
The $500-!500 pianos all seem to have noisy keys to me - the P255 has the quietest ones, which is important if you record vocals and pianos at the same time. My mic picks up all the key noise, so I wanted minimal sound.
Just more thoughts for your think tank!