When are you going? Currently Artist Point is taking reservations only through 10/22/18. I'd choose that if going by then. It's unknown what will happen with Artist Point after that, but it's rumored that it will switch over to a character dinner.
I don't think you would be disappointed with any one of the three.
I would look at the menus and see which is most interesting.
Depending on when you are going, AP may not be an option as it looks right now.
If you're really interested in Artist Point and will be there before the changes, I'd do that. Who knows what they're planning on doing with it. Otherwise I'd pick Yachtsman.
We aren't going until January but I'm still obsessed with planning. We had to cancel our last trip and I haven't been to WDW for 10 years.
My DH thinks I'm crazy to be thinking about meals we won't be eating for 6 months. Wait until I tell him I have to book our fast passes before we leave too. He's used to Disneyland and he hates planning for anything. He thinks we can just show up and go to the first Disney hotel we see and get a room.