I'm currently running an M&P9 but I would like to switch to a 45. The choices have been narrowed down to a Sig Sauer 1911R-BSS or an FNX-45. I know I can choose a M&P45, but I would like to try something new.Uses will be: carry, ranch pistol, defense and range fun. My main concern on the FNX is lack of aftermarket, were the 1911 excels.