I've got a ford C-Max Grand. I love it.
It doesn't have backward facing middle seats, but it does have sliding doors which were on my wish list (twins plus older sibling).
It's based on the ford focus, so drives like a car rather than a van. The middle seat is split 40:20:40, but the middle bit is stored under one of the outer seats, so while I usually have it as two separate middle seats, it's dead easy to flip the middle bit into place to give a 3 seater bench seat in the middle if you have extra passengers. The gap in the middle also makes it easy to get to the back two seats when they are in use.
One of the other important things for me was how much leg room there was in the very back two seats. They are dead easy to pop up, too, and are quite raised off the floor compared to other 5 + 2 seaters I tried (even the volvo XC90, which is huge, had 3rd row seats that were low to the floor). It's a bit difficult to explain, but if you get into the very back of a few of these cards you'll know what I mean!
Before this I had a peugeot estate which I didn't like at all.
P.S. I don't work for ford, but I'm still happy with this car 18 months on, whereas I hated the peugeot after about a week.