First is due in November, but we're hoping to have our second within two years, so I'm keen on getting a travel system that can convert to a duo.
I was really keen on the Vista, seems like good value for money, handles well, seems intuitive to use. But the Rumble seat you can add for a toddler doesn't fit at the same time as the carrycot, so it looks like there'd be six months where you can't use it for both properly 
The iCandy A2P seems to have a much better duo system, with several combos, and I like the Carrycot. But the pushchair seat seems very flimsy to me, and the material on the shade is a bit saggy, and clicks loudly when you raise or lower it, which isn't great if your child is sleeping.
John Lewis have an offer on the iCandy to include both pushchair and carrycot fittings for £595, so it and the Vista are the same price, so I'm a bit torn.
Can anyone reassure me of the comfort of the iCandy's seat? Or should I go for the Vista and cross the second child bridge when we come to it?