I have tbh also had a couple of scheme cars that I got bored of mainly because the drive experience in the first year had diminished in a couple of cases this was simply because the tyres had 6000 miles of use which in both cases threw the steering set up out completly ( new shape nissan note 2015 and bmw tourer)
Having had the Megan E Tec for 15 months now ( 7000 miles)
I can say hand on heart that it is the only car I have ever driven (both scheme and private) that still maintains that first drive feeling everytime I get in and drive it.
The car is a Joy
I will miss it like no other at the end of my lease
But me being practical above all else
I will then be looking at the most efficient/suitablr cars available
Things are changing at a pace
The Kia EV3 if/when available is my top pick at the moment but at the speed of new offerings who knows whats going to be around the corner in 18 montths time.