All of my guns outshoot me. The only way I can tell if one is more accurate than the other is to shoot them off a solid rest. Shooting off-hand, I'd never be able to tell the difference.
Perhaps the question you should ask yourself is what the end purpose of getting an Ed Brown, Les Baer, Wilson, Kimber or Springfield pistol might be.
If it's for carry, I would go with a reliable pistol that's not exhorbitantly expensive. Why? One reason is that daily carry is going to take a toll on the finish. A lot of THR members have $2K as fun money. I don't. An Ed Brown pistol would be one of my most cherished treasures. Secondly, if I'm ever in a situation where I have to draw and fire while shaking and sweating and just trying to hit COM, I don't think that the extra .1 MOA I might get from an Ed Brown or other $$ pistol is going to make a difference. And, if I get into a shoot situation, that pistol is going to be lying in a damp, dark rust-prone evidence room for years.
If the pistol is for range only, and the $2K isn't going to take food off the table, then why not indulge yourself if you're comfortable with the price?
This past weekend, I was in my local shop. The part-timer there was wearing an Ed Brown Bobtail Kobra Carry in a Galco Miami Classic (a holster that's hard on the gun's finish). I know the guy, and I know he doesn't make a gazillion bucks. It then occurred to me that he only carries that gun for about four hours a week, when he's at the shop. Given my circumstances, my pistol is in a holster pretty much seven days a week. And it shows.
In the end, though, it sounds like you're questioning whether the extra bucks are worth it. Judging from the tone of your post, I'd bet an Ed Brown pistol that you'll go with a Springfield or Kimber.