I've got one to use with this baby and their older sister who'll be 15 months when they're born. Used it a couple of times in mono, but I don't want to scratch it in my boot so I'm waiting until we get a bigger car to use it properly!
I love it so far though. Had an Oyster Max for #1 & #2 and this is so much better. My eldest hated being at the bottom and refused to get in after a couple of months, and I didn't like having baby in the carrycot at the bottom as it felt really hard to get to her, she just seemed dumped in the basket! I love the fact it's a side by side double, but unlike others when I've just got baby I can have it as a single. The side basket is an added bonus.
Oh, and we've just bought a second hand cosatto double to take on holiday, and it is so HEAVY compared to the Donkey! The Donkey really is a breeze to push (although I've not tried it with 2 in yet, but it was lighter with my 11 month old and a load of shopping than the cosatto is with nobody in it) So yes, I'd definitely recommend. People do have their little niggles with them, but I see people sell them and then regret it.