Firstly - what kind of driving are you going to be doing? Are you popping around town (to the shops, friends, work, school run?) or are you commuting/doing long distances for work?
If you're just popping around town, then please please don't consider a diesel anything - the DPF issues people are having from cars that don't go on long motorway trips, are horrendous.
Which brings me onto the Discovery Sport. If you're buying used? 90% of examples will be diesel.
And what they won't tell you (but a brief Google will) is how the car has been engineered so poorly that even a 20 min run on the motorway at 50mph won't properly clear the DPF. It needs an hour or so on the motorway regularly at a very high gear, running hot, and even then the car can still suffer from oil filter contamination, something which Land Rover don't always pay for.
So yeah - if you're really using a second car for running around, school drop offs, then please don't buy a Land Rover for the badge - it will let you down!
Seat Alhambra, Citroen C4 Grand Space Tourer (7 seats), Skoda Kodiaq, Ford Galaxy - these are really strong cars with great space.
Try and ignore the badge snobbery obsession stuff - Land Rovers are desirable but the DPF issue on those Discovery Sports has put me off for life.