And just to add to the above, S&T (or MP + AGPS) are still really useful "only" as trip planning software, but they pale in comparison to what iGuidance can do for you as navigation software. You may check a brief review of S&T and iGuidance >>here<<
Thanks Marvin! I've orderd my BU-303 and also bought the iGuidance, everything came out to about $160. Appreciate the input.