Hi Mike - welcome to the message board .>Sorry to keep nagging with these questions but I have so
>damn many! Where is the best place on the web or in print
>media to narrow my search for used aerobatic aircraft ?
You needn't feel guilty about asking lots of questions - some very knowledgeable, friendly and helpful people read and contribute to these message boards and I'm sure they're happy to offer you assistance getting started in aerobatic flying.
Welcome aboard and don't hesitate to ask for further help or advice (although I'm personally unable to offer the level of expert advice in this field that others at this message board clearly are).
-Stephen.