I am always completely skeptical when the name of a recipe includes 'The Best...' I think it's over used and I also think, how can it possibly be known what is 'the best'? Have you tried every recipe (to be fair, I am sure America's Test Kitchen has tried quite a few) and even if you've tried every recipe out there, how can you possibly know what people are going to like? Everyone has a different idea of what makes 'the best' of anything. I mean, some people like fudgey brownies, some like cakey, and there are some weirdos out there who don't even like brownies!
And then there's biscuits. I am sure that if you asked a dozen people, they would all have different ways to describe 'the best' biscuit. Just to let you know, I have no idea if this is in fact, the best biscuit recipe. It was good, we liked it. It's been a while since I've made biscuits so I can't tell you if it's better than the recipe I've used before. They might be my favorite but whether they are your favorite or not isn't for me to say.
I feel like this might be the kind of recipe you have to make a couple times to get it perfect and that gives you time to add to it and make them how you want them. I halved the recipe and it made about 7 biscuits and seemed to work well.
I'd say if you are looking for a great recipe, give this one a try. It might be your favorite. It might be your idea of the best buttermilk biscuits. It might be mine. I am going to have to make about 10 batches of biscuits just to be sure. ;) But in the mean time, it was a great recipe and if I needed biscuits for something, I would use it again.