What are they like to own? Reliable, comfy, etc?
Reliable – Again Mk2 was better than Mk1 for me. Had a few things go wrong with my Cooper S (steering pump, exhaust manifold). Mk2 I only had for a couple of years but had no problems with it.
Comfy – I can’t speak for a One. They are generally pretty firm, especially with run flats which they come with as standard. Seats were pretty supportive though.
Other things – Great fun to drive if that is your thing. More practical than some people think. I managed a few trips to the Alps for mountain biking with them no problem.