I used a 300TDi 110 for one year and then Td5 110 CSW for two years to commute 400 miles per week with no problems.
Now doing it in a 90, which is a bit more bouncy on uneven roads (110 was very stable due to longer wheelbase) but easier to park.
Overall I found the 110 very stable, comfortable and quiet at 70mph. (with disco II transfer gears)
You can also fit a huge amount of stuff in the back. The last 110 I took to Croatia for a few weeks and they do make a great vehicle for trips.
They are good around town as people seem to naturally give you more space, even though a defender is not very wide.
Richard