Different frames nominally the same size vary enormously in my opinion. I'm 5'10" and I bought a Liespeed frame M/L 55cms, and it's way too big. A 55cm. Pinarello fits perfectly. A bit like Levi jeans, except they don't shrink in the bath, unfortunately. If you go for a big outlay, make sure it fits properly beforehand.
Different frames nominally the same size vary enormously in my opinion. I'm 5'10" and I bought a Liespeed frame M/L 55cms, and it's way too big. A 55cm. Pinarello fits perfectly. A bit like Levi jeans, except they don't shrink in the bath, unfortunately. If you go for a big outlay, make sure it fits properly beforehand.