I took Peter out on his own this afternoon with the balance bike for some practice. We have this balance bike which is very sturdy and well made. We bought it for Harry after a friend recommended the brand and would definitely recommend it to others.
Peter was great on it - much better than I had expected given that he has had less physical freedom than Harry at the same age. He didn't fall and could move much quicker than on his four wheel ride-on (which is also a puky - this one). I think he will be choosing this bike from the garage in future when we go out!