I run mine my Td5 90 between North Yorkshire and Cornwall about every 3 months, use to do 400 mile round trip every week in it.
Can be noisey and to be honest does get a bit uncomfortable near the end of the trip, specially if there is a lot of slow traffic.
With overdrive I get between 30-35mpg, depends on right foot.
Would recommend upgrading the front seats to something better.
The only problem is if you carry a lot of luggage, you loose any passanger capability in the back. Also the back inward facing seats are not very good to use for long trips.
Apart from that, I am happy enough with it on long trips.