In reply to dougp87:
I never had 'Sazis but I had to go up a good 1.5 UK sizes in the Stonelands when we got them in (I'm usually about an 8.5 in something like a Bandit and a 10 in the Stonelands was about right). The Valor is built on exactly the same last as the Defy but with a much stiffer sole.
I would say the Stonelands have the technical edge, but the Valors beat them on price and probably comfort.
How do you get on with the 5.10 heel?