Sarah,
I have just bought a maclaren mx5 or something similar m5...its 3 wheeler but sensational and light. Bertini do a good 4 wheeler, not sure what the model is..will go and look. I like my Valco and bertini 3 wheelers but dont love them...I did love my old maclaren 3 wheeler. Yes some people have an obsession with shoes mine is prams!!
Bec