I've never had any problems with any of my PSR arrangers...and my keyboards get twice as much use as the average home player.

I invest $3000 for two PSR-S900 and use them both for three years or so, and I make quite a tidy sum of money with them, then sell them off, take the money and re-invest in two more....rinse and repeat.

That way, I'm always current with the latest and greatest technology, plus I always have a backup.

I have never had a button fail...the last two PSR-3000 I had, were problem free.

Any instrument can fail...or be dropped, or have something spilled into it...or be stolen.

The S900 is the best "bang for the buck" out there, portable, light, and awesome sounding, and still selling extremely well here in Eastern Canada.

Ian