If you can buy a new Ed Brown 1911 for $2k, jump on it immediately as it's an incredible deal. They start closer to $3k without any options.
All depends upon your budget and use requirements. I own several semi-custom and full-house custom 1911's. I have one Les Baer but wouldn't buy another. After 2,000+ rounds you still couldn't press check the thing (which is a requirement for me) - reliable and accurate but stupid, stupid tight. He just doesn't setup a 1911 like most folks. It promptly went off to a gunsmith (also a FBI HRT member) who made it right for me.
I can take or leave Wilson, Nighthawk and the lot. Nice, but they do little for me as a semi-custom at their price point. Forge is right, Brown and Wilson make good parts.
If it were me, I'd pick up a blued 70 series Colt, shoot the piss out of it, and then send it off to a gunsmith with an excellent reputation (there are many) who can make it into whatever you want. You won't be too far over the base price of a semi-custom pistol at that point, but you'll have to wait a long while for a good 'smith.
While it's true they are not too hard to work on as far as part fitting goes, if you're not comfortable with using files, jigs and stones you may very well end up with a dangerous paperweight when it comes to the fire control parts. Best to know what you don't know here. That said, there are quasi drop-in options that don't require too much heavy lifting. You will need to get comfortable doing routine maintenance by yourself: fitting extractors, changing springs, etc. Not hard just takes some dedication to learning the platform. Get the Jerry Kuhnhausen books.
Try 1911forum.com for opinions on various mfg. you are considering. Lots of fanboys but some good info to be had there. For a good look at what custom smiths are doing these days check
http://forum.ltwguns.com/ some incredibly gifted folks post there.