According to a technician friend of mine, (who works on primarlily Yamahas and Rolands) the Roland keybed is every bit as durable as the Yamaha's.

The RD series is generally considered to be very reliable...the earlier models using the extended spring mechanism weren't as robust as the compressed spring rotary oil damped action (SK-6)that followed...the pianos with the latter had an "S" suffix after the model number...eg RD300s.

Early PA-4 Hammer actions, as on the FP-8) were also prone to get noisy, but this was soon rectified.

Hope this helps.

Ian

[This message has been edited by ianmcnll (edited 08-09-2007).]