Charles,

Does anyone know of any reasonable cost GPSs suitable for both street
and aviation use.


In a word: No. While the Garmin 296 is a nice unit, it will be much
more expensive than, say, a Lowrance 600c for aviation (the Airmaps
don't do turn-by-turn) and any TomTom, Garmin or whatever for streets.

--
Thomas Borchert (EDDH)