Hi,

I havn't used one as my kids had a bigger age cap, but lots like the phil n ted, there is a cheaper version called Europa by childcare i think. there is also the ABC adventure buggy that has a toddler/newborne seat that goes on the top. If i was going to have anymore and they were close in age i would choose the abc one.

OR there are teh tandem style where the older kid sits in the front but most only lay half back for the toddler.

hope this helps.