Did you see this thread?
What’s your favorite Duncan? - General Yo-Yo - YoYoExpert Forums
I’m guessing I have more Duncans than anyone here but I’m not much of an authority. I don’t have any of the unresponsives. My recommendation is:
Butterfly 2022 with derlin caps - Must have!!
Freehand One FH1 Small Bearing - there are lots of FH1’s but this is my favorite.
Freehand Mini - New Release - there are a few green small bearings available and a bunch of the large bearing. I have a large and a small on the way.
World Class - New Release - Not much history but I love mine.
Imperial - Hard to find - How can you have Duncans without an Imperial?
I buy Duncans because they make me happy. I hope they do the same for you. That said they don’t make the best of every style and if you just focus on Duncans you will miss out on a lot of great yoyos.