There is an operation ireland that uses a Seneca V all the time for trips to the uk and on those sort of journeys of 250nm it seems to be a good choice. Admittedly not very mountainous terrain but still has to deal with lots of wx. My friend used to operate a Meridien and when it came to selling it, he demoed it to two old ladies who had a pilot and a Seneca V. They preferred the Seneca...