In reply to onlyhalfwayup:
What grades are you looking at?
Miura's are an aggressive shoe, and too much for my feet.
But it really depends on your foot shape, its really worth spending the time working out which brand shape fits you. I wish I'd done this years before. Once I discovered I'm a La Sportiva shape, everything became easier.
For reference I wear Katana Lace, which are excellent on small edges, and ok on everything else.
I'm happy with them in the E2-E5 range, but like most shoes, if you want performance then you need them tight enough you won't want them on for too long.