I will echo the notion that not many gunsmiths are sufficiently familiar with Lugers. There are some that is true, and one of the quickest indications that they have some knowledge of the beast is if they can field strip the gun in under 30 seconds (I can do it in 15

).
I don't think I would have any problem putting a few rounds down range with any of the 3 Legacy guns, they look to be in good condition, but I wouldn't plan on shooting the bejeebers out of any collectible piece.
And I still think the Swiss is my pick!

Ron