If I could only wear one shoe for the rest of my life, which would be a complete tragedy, and I could wear any shoe (money no object) then a pair of black patent Mary Janes by Christian Louboutin would be my shoe of choice.

They are quite high which could prove unpractical for long periods of time but his shoes are so well crafted that you may not even notice. These shoes would be wasted with trousers but would be great with a skirt/dress. £420 from net a porter.