I've been using the PSR-3000 every day since they first became available--not a scratch. Sounds as if DocZ was dragging his behind the car on a length of chain between jobs. Just kidding Doc.
I no longer have to put up with drunks, cigarette smoke, and all the other problems Doc described. The smartest move I ever made in music was to get out of the bars and animal club lounges.
Doc, if you are going to remain in that kind of environment, buy the cheapest keyboard you can find--something with no frills, such as the DGX series. In your situation, the keyboard should be considered disposable.
Good Luck in your search,
Gary