What size Sidi's should I order?

I'm getting ready to order a pair of Sidi's. I haven't decided yet between Dominators or Genius (I ride road only), and I plan to pair them with Speedplay Frogs or Light Action pedals. I wear a size 6 street shoe and a size 37 Shimano shoe. I have a narrow heal, a fairly high arch and am a bit wide in the toe area. I still wear normal B width shoes, but sometimes must have them stretched a bit in the toe box area. I've read several comments on here about Sidi's running small. For a size 6 foot with this description, I'm looking for recommendations on what size I should order. I'm thinking of ordering two sizes and returning the one that doesn't fit.

Recommendations would be greatly appreciated.

Thanks

I found the size chart for Sidi's to be accurate,actually. I wear a 9-10 and ordered a 42.. they fit like a glove! I couldn't be happier with these (my first pair). Glad I like them so much too! I've NEVER spent over $200 on a pair of ANY kind of shoes! LOL!!

Wow, did you steal my feet? US women's 6. Narrow heel, very high arch and instep, big toe that gets cranky when cramped. I have Sidi Doms and Genius. Size 38 with thin socks for a glovelike fit. Size 38.5 for thick wool socks or Storm Stocks. Hope that helps.

My feet are almost exactly like yours! I have the road dominators in 38's and they are perfect. Actually, I wear a size 6, but even a 5.5 in dress shoes and the 38s are fine. I loosen the ratchet for my heavy Woolie Bullies and it still works. My mtb Sidis are 37s and are too small!

SadieKate and Robyn, I knew there would have to be someone out there with feet like mine that could give me some guidance. I think I'll order a pair of 38's and a pair of 38.5's. The TE size chart would have put me in a 37.5, but after hearing everyone talk about them running small, I was afraid to order without some input from someone with clones of my feet. Unfortunately, there is no store anywhere near me that has any to try on.

Mind if I ask what pedals you've paired them with?

Look Keos on the road and Crank Bros Eggbeaters or Candies on the dirt.

I wear a size 6 generally and have Sidi Doms in 37.5...fit perfectly! I believe in the half sizes the lengths are the same as the whole sizes, but with more over-all volume in the forefoot.