Ok.
Littmann.
Thats it.
Everybody says: "Dont buy a littmann it will get stolen" and nevertheless everybody has a litmmann.
I think that besides a good stethoscope you also need a good pair of boots, good scissors, a small lamp that can be beaten up and a descent notepad or something to write on.
That's interesting. We are working on a new device to keep your littmann from being stolen. It's not available yet though. I also agree with the scissor comment.