In the January 2002 Cirrus Update, they gave pricing information for the Avidyne EX3000C @ $1K and EX5000C @ $3950 above current contract price. The difference between the two is that the EX5000C will accept information from other sources (GPS, etc.) through the ARINC 429 data format, while the EX3000C uses the traditional RS 232 line.
Ian has stated that this format is the “higher end” interface of choice for avionics suppliers. Although I am an electronics engineer (analog), I don’t have any experience with ARINC 429. Any opinions out there as to whether this is worth an extra $3K?