Hands down Les Baer. I bought a new Thunder Ranch Special a few years back, brought it up from the US, it is bar none the tightest 1911 I have ever held. Les Baer has taken the 1911 to the top of the ladder. I have had Kimber, STI, Colt, Springfield and a few custom 1911's, Baer has set the current standard of what the 1911 sould be, keep in mind, that this standard comes with a hefty price, and the others mentioned are fantstic quality, but the Baer is king of the hill.