I've seen a lot of people on here mention .223 and 5.56 but I've never tried 5.56 round. since I've only tried .223, I was just wondering if anyone that has tried both has a preference.

as to the whole 9mm/45 thing it seems to me that most people think its a choice between carrying 15 rounds of 9mm(baretta) and carrying 7 rounds of .45(1911). personaly I split the difference and got a glock that carries 10 rounds of .45acp.