Best trigger out of box on sub $1000 gun w/o any changes? Imho: browning buckmark. Only 1911s I've felt better were over $1000 or had work done. Sig w/ srt and short riggrr is pretty nice too, but buckmark was very surprising.
I know you said price is no issue, but at a certain point the gun may be 'stock' but have a trigger that should count as an aftermarket tweek.
A $2500 Wilson Combat is a better gun than a $600 Rock Island. I can buy that Rock Island and drop a C&S Ignition kit in for under $800. After fine tuning the trigger itself, its trigger may be indistinguishable from the Wilson Combat: even if it cost $1700 less.
However your standards in the original post would allow the WC 1911 and exclude the RIA 1911.
Price IS a consideration of any meaningfull comparison.
"Price is no object, but which factory original car (no aftermarket engine tuning allowed) has fastest acceleration?"
Do you want to hear Corvette, porsche, ferrari, Lambo, Maybach, Bughatti, maclaren or what? Btw, my 'tuned' motorcycle cost under $12000 with tuning, but does 0-60 in @2.9-3 seconds. Not with me on it, but it was rated at 3.1 befor I added 20-30 horse and 20ft/lbs torque.
Seems silly to really be comparing a $12000 vehicle to a $2mill one.
Like it seems silly (to me) to not allow changes to a guns trigger, but allow guns costing over $4000 to be compared to $300 ones. Above a point they may be 'factory' by some standards, but should be thought of as a gunthat had trigger work done.
Maybe your definition should be to compare guns that were assembled only: none that a gunsmith fits parts to individually. Again, that will prob keep the cost undrr $1000.