A pair of these: http://fiveten.com/products/footwear-detail/13870-spitfire-midnight-black-sp-1888577310
I picked up a pair of these from eBay recently. I went a size up from my usual 11, having had problems with five ten sizes coming up small before, but as it turns out they're a normal fit and too big for me. They're in their original box and still have the tags attached.
RRP is £80, you can find them online for £60. Yours for £40, or make me an offer.