I haven't personally tried Urban Kanga, but a friend of mine used it for her second child and said it was quite convenient for switching between cars, which was the main reason she got it. The trade-off she mentioned is that foldable seats tend to be lighter in build compared to a dedicated fixed seat, so if you mostly use one car, a traditional convertible seat might give you more stability and longevity for the price lah. Worth thinking about how often you actually need that portability before committing.