I bought a Roland RD700 several months ago and have had nothing but good luck with it. The sounds are top notch, I have the studio and the Grand Piano expansion boards. The bottom is not cheap particle board but seems to be some kind of composite board. Seems so far to be plenty rugged enough to do the job. I think it's a weight saving feature. It's probably the lightest of any comparable stage piano. The P200 is rugged, extremely heavy and has a very limited set of sounds. Why Yamaha keeps that built in amp and speakers I have no idea. It's a stage piano, not a workstation or home piano. Anyway, the RD700 is not meant to be an arranger or workstation, I'm buying a PA80 to cover that end. If you're looking for a super stage piano, the RD will fill the bill, and at a manageable weight.