My main interest is in telemetry for various projects, like high
altitude balloons, rockets, etc. APRS is something I'm definately
interested in, but I'd also like to include other data as well. In the
past, I'd used a much simpler (and limiting) position reporting system
and recorded all the flight data on an eeprom for later retrevial. I
don't anticipate monitoring more than one frequency at a time, nor am I
looking to break any speed barriers just yet.

Thanks for the help!
Dave