I recently replaced my Springfield Armory Range Officer Champion 1911 with an M&P Shield 9mm as my concealed carry. Sometimes I'll carry my J-frame .357. Between the two, I prefer carrying the 9mm Shield. The J-frame is a great little powerhouse, but only holds five rounds. I carry the seven round mag in my Shield with the spare eight round mag in my pocket. Plus, the Shield is so much more streamlined for conceal carry.