For turn key I would look at Fiskars, Council, Vaughan, and Condor. Fiskars shouldn't need any work out of the box. Council Tools might need a little sharpening but they are one of the few quality American made axe companies left. Vaughan's Hatchets tend to be made in the USA. I have their Mini Sportsman's Axe and it has a nice high centerline and good hard steel. It needed a lot of work to get the bit into working order but in the end was very much worth it. They have one called the Super steel Hatchet that is probably in the realm of what you are looking for. I own one Condor axe and it is very serviceable but far from the best I own.
Vintage is a great route to go, but there is a learning curve to know what's good/salvageable and what is not. Also just because it is vintage does not mean it is a great axe. I have one hatchet in particular that I regret picking up. It is very thick and lost most of its toe to the grinder.