I have had my Explorer for over 3 years with no major issues. Failed its last MOT on rotten rear hangers, a ball joint and a hole in the exhaust. Not bad for a vehicle that now spends half its life on the beach and in the sea!! Reasonably comfortable but extremely practical. There is no other vehicle (maybe the Toyota Landcruiser) that can match its size for such little money. 20-22 mpg is easily achievable which is just as good as most 4x4 diesels. Pulls like David Beckham at an all girls school. Very solid and very reliable.
Size!!! 6'x4'x3' of load space easily.
Slightly higher ground clearance or shorter wheel base as easy to ground. Better electrics (window wiper has about 50 settings of which only 3 work)