We did exactly what you are looking at doing. Baby jogger city select + toddler seat and adaptors...just wish I ordered the adaptors for the capsule cos I had to buy it here for $100....from baby on the run off eBay. We got it in about 2-3 weeks, no hassles and it hasn't skipped a beat. For a double pram it is the best one I tried, especially as my dd1 is quite tall. Basket underneath is awesome!! The warranty business was a bit worrying but so far so good!