I used to own a 2013 AT 395. It was an absolutely amazing boat, by far the best I have ever had out of 13 boats over 45 years.
The hull design is perfect. It had unparalleled sea keeping abilities for a 39 ft boat, yet also outstanding performance. We had a 480 hp Cummins, and the boat would cruise at any speed from displacement to 17 kts, and topped out at 21 kts.
The construction quality and attention to detail were also amazing. Going aboard any American Tug, and any Chinese built boat, side by side is an eye-opening experience. Crawl through the bilge and machinery spaces of the AT 395, see how the wiring and plumbing is done to commercial standards, and it's hard to settle for anything else afterwards.
The one and only thing the boat did not have, and our reason for selling it, was walk around side decks. I'm in the camp of walk around side decks being a non-negotiable must have (I'd rather give up some interior space in exchange for being able to get anywhere on the boat in a hurry for line handling). We had the optional full length side railings, and the side decks aft of the pilothouse just weren't quite wide enough for my size 12 feet to negotiate. At about a 4 in wide deck, my feet just didn't fit (at least not if I was in a hurry).
We had the boat for 2 years, and absolutely loved it. We're not likely to ever have one as nice as that again.
But, during one docking, my size 12 foot got caught in the side railing, and I tore the meniscus in my knee, necessitating surgery and removal of half the meniscus. It broke our hearts, but I just didn't want to risk tearing what's left of the meniscus and needing a knee replacement.
I tried to cajole American Tug into modifying the deck house to make the side decks aft of the pilothouse the same width as forward. But, I guess sales of this incredible boat are strong enough that most buyers either don't care about side deck access, or have smaller feet than I do.
If you don't need walk-around side decks, I don't think there is anything else that comes remotely close to the AT 395 in that size range for a combination of seaworthiness, performance, and build quality. I've been looking for our next boat for the past year, and after owning an American Tug, nothing else measures up.