I don't have just one .45 ACP autoloader that puts a smile on my face. My smile appears when a gun shoots accurately and reliably, i. e., no failures. So...my SIG P220ST, SIG P245TT, SA XD-45 Tactical, and H&K USP45 Expert all put smiles on my face. I wish I could include my SIG GSR Revolution, which is probably the most accurate, but it doesn't feed reliably. I have a few S&W .45 ACP wheel guns that also put smiles on my face, but you posted in the autoloader section.