I have the Phil & Ted's Dot, and as a double I can't recommend it highly enough! My eldest little one is 20 months and the other is 6 months (I know, I am crazy haha) My youngest would have to go in the second seat for it to be used as a double, so needless to say the close caboo has been used quite alot! I would also say the cocoon is completely pointless as they grow out of that even quicker! As a double with a toddler and a bigger baby, it is going to be perfect, but I must admit there has been times I have been very frustrated with it! The tyres, I agree - nightmare! First time I went to use it they were all flat and had to go and buy a bike pump in the middle of a shopping centre!! I have read many go to an actual bike shop and get the tyres filled with some kind of green sludge that helps? I'm yet to try!x