I'd go with the Kia Sorento. You get self-levelling rear suspension as standard on most versions of the Sorento. Kia's latest eight-speed automatic gearbox is excellent and the Sorento's 2.2-litre diesel produces 200PS (compared to the 150/180PS engines found in the Discovery Sport) - this means the Sorento is easier to drive up hills, when lugging a heavy caravan behind it. But the biggest plus for the Sorento is Kia's seven-year/100,00-mile warranty - something Land Rover won't ever match.