I have two old Solton (now Ketron) MS-60's. Used 4 nights a week outside\. Been left overnight outside...rained on, spilled on...dropped. Still work great. They're 15 years old...all metal, and available used all over.
I can't kill them and I've tried. Same kind of situation you're in.
R.
[This message has been edited by captain Russ (edited 11-20-2010).]