Hi Erin - I've found out that the only difference between the Urban Walker and the Prestige is the Prestige comes with a boot cover.

The Combi is great but in the end my husband and I bought a Baby Jogger City Elite. It cost more than we were planning to spend, but I don't like complicated things and it's really easy to fold, unfold and adjust. Also we decided the likeliness of us having another bub within a couple of years of our first was a good reason to buy one that can take an extra seat in future. So that's what we've done