Well I can give you my 2 cents worth.
A couple of years ago I decided I wanted to get a 1911.May have gone back to my days in the army.I don't know.The first one I bought was a Kimber Master Carry.3inch barrel.Looked nice,but too many malfunctions for my taste.Took it back to where I got it and traded up to a Knighthawk T3 he had in stock.It has pretty much been the pistol I have used in my league the last 2 years.A bit too heavy to carry comfortably,it's great for league.No issues.Not too long after I bought it I wanted another one,more or less as a keepsake to pass down.
This time I special ordered it.And what I ordered was an Ed Brown Kobra light weight,with my military id number as the gun's serial number.A couple bucks more,but not much.
Now,here is what I have learned,in my opinion.3 inch barrels ,at least a few years back ,are too short for the 1911.Supposedly a reliability issue having to do with the recoil spring.4,25 inch barrel seems to be ok. Both my Nighthawk and my Ed Brown are that size,and neither has had any issues.
Now the down side to the lightweight.The frame scratches rather easy I have noticed.However,in defense of the Ed Brown company,I believe this possibility is mentioned in their brochure.
I guess one last thing.It took awhile to get used to carrying it cocked and locked,psychological and nothing more.
My 2 cents,
Johnny