Tough question: "Best" out of the box to me includes a lot of factors: Reliability (gotta work first time out, no "break-in), accuracy (2" or a bit more from rest at 25 yds), fit in the hand (my hands, not some composite made up in a laboratory), suitability to purpose (a carry piece that's got weight to absorb recoil, and enough barrel to give a sight picture usable to 50 yds or more), and power commensurate with the defensive pistol's prime purpose (put the adversary down, man or beast when the chips are down), just to name a few.
Meeting all of those listed criteria, I'd go with Ruger's SR1911 CMD, my Browning Hi-Power in .40 S&W, and a Sig P226 Mk 25 (this last in spite of that pitiful caliber).
All three have been superbly accurate for me, as close to 100% reliability as is possible in a machine made, production pistol, and all fit my hands comfortably (read: I shoot them well with no warm-up). Were I to pick one for all purposes, it'd be the Browning at this point in my life....great feel (hell, I'll say that it's the best feeling pistol in the world in my hands), good/great caliber with a wide choice in bullet weights and all that unlimited brass for reloading. The Browning's that good, and I'm an old 1911 shooter for better than 50 yrs now, but the Ruger and Sig (despite it's caliber), run a very close 2nd...and about tied in that regard, I'd say.
HTH's & YMMV, Rod