Do you buy your cycling shoes bigger?

[Crankin]

36 in street shoes.
37 in cycling shoes.
38 in Sidi cycling shoes (which I can no longer wear, because, despite the narrower heel, I needed a wider toe box).

[zoom-zoom]

38 in Sidi cycling shoes (which I can no longer wear, because, despite the narrower heel, I needed a wider toe box).

I never found Sidis to be all that narrow in the heel, so I'm not sure how they garnered that reputation. And they were so friggin' tight that I started having nerve issues in my right, larger foot.

Now I'm in men's LGs in the same size (40 for both road and mtn--was also a 40 for Sidi, but probably would have done better in a 40.5, though they still would have been too narrow)...world of difference. And the heels on those actually are snug. My heels still slipped in women's Sidis.

My regular shoes tend to be tagged with anywhere from 38.5-39.5 inside, depending upon brand or model.