Ahhh, this old can of worms again!
Now i will admit to being slightly bias in favour of the old 110s, having owned 3 series 111s, 2 110s and now a disco 2. But everything that has been said on here is pretty much true, so here is my reasoning.
firstly, do you actually need one? for space, towing, off road ability? or is it just the whole landy look?
secondly, how far are you realistically going to be driving it, i.e., if it is your every day car, are you town (won't fit into most carparks), or country? rough roads and hard suspension!
thirdly, can you really afford to run a car that does 25-30mpg, with a realistic top speed of 65-75mph (20-25mpg).
forthly, can you wield a spanner, read (and translate) a haynes manual (or have an ubber large bank balance)?
If you can justify all of the above, have a go, you may be lucky and find a really good example and love it to bits, or you may end up like so many here, in love with them but bitter and resentful that they weren't everything they promised.
finally, if you do get one, and don't like it, i'll have it off you for a tenner (just don't tell the wife)
good luck and let us know hat you decide.