The "best"? Hmmm... I guess we all have our "personnal best", but there is no such thing as a "best" 1911 out there.
This being said, you will rarely find a better 1911 than one that has been hand crafted with dedication and passion. A true custom 1911 is my idea of the "best" 1911, and in that field, names like Ed Brown, Les Baer, Wilson Combat, Springfield Custom, Dan wesson and Rock River comes to mind.
If you're not planning to go into the custom field with price tags over 2k, then any of the popular makers could fill your bill. I'm personally a Springfield Armory fan, and I think their lifetime warranty and super service rule the market. But, you'll find extremely pleased customers of Colt and Kimber just as well. The last that come to mind, but that might be suiting for your needs, are the very cheap ones like Norrinco and Rock Island Armory, and the new kids on the block, S&W and SIG. Not bashing at anyone, just giving you my idea of the "ranking of the best" out there.
Happy shopping! 1911s are a true passion, and you can learn somthing on them every day.
Oh one last thing. If I had to pick one 1911, making a balanced choice between custom but affordable, my pick would go for the Professionnal model from Springfied Armory.
Link to SA page
Alex.