They're not cheap up front, but I'm still riding with the Sidi Dominators I bought 7.5 years ago. I think they go to 52, but most sellers carry up to 50. You can get the Mega for wide feet. Add a MTB pedal (Speedplay Frog, Crank Brothers Eggbeaters, or SPD), and you can walk around. Buy now if you can get last year's closeouts!