imported post
I don't know if it was a nationwide law but at least here in Pa you must inform people they are being recorded for it to be admissable as evidence. I've tried to record terrible verbal abuse from a past boss but they wouldn't listen to it unless he was told I was recording our conversation. Of course he was very polite then.
Get one with an Attachable mic so you can keep the recorder in a pocket and clip the mic higher, sound quality is MUCH better.