Yamaha has been making keyboards since 1962. They have not been successful by accident. They do their market research and determine which keyboards they can produce and still make a profit.

Attached is a list of past keyboards broken down into their classiffication of "professional keyboards" and "home keyboards".
http://www.yamaha.co.jp/manual/english/chron.php

Some people choose to use a home keyboard for professional use.

I use my PSR3000 for both and love it.

Before purchasing the PSR series, I played professionally for many years using 41 keys (Cordovox) and never heard a complaint that it didn't do the job.

Regards,

Jerry

[This message has been edited by Jerryghr (edited 09-04-2008).]