I hear a lot of people talking about 10mm as if it was the end all round for semi auto. But looking at buffalo bore and double tap load data for hard cast heavy bullets, out of something like a glock 29 it doesn't perform that much better than a similar 9mm +p out of a g19 or 45+p out of a compact 1911. So unless you are going for a g20 with 6" barrel or a g40 why all the hype?