My favorite so far in a guitar I own are the "Blade Knots". In my Prototype Singlecut McCarty 594, that I got just a few weeks ago. Awesome inlays, and my favorite guitar ever!!
And then also I have a couple of 594 Private Stocks in the oven, two with Edge Knots: (They have not been done on an actual guitar yet, mine will be the first!) ..and another with Diamond Knots: I am also a fan of the Labyrinth Knots, I think those will be next on my list!! Sweet inlays!!
Mine too, had these put on my PS, which was my 20th anniversary of playing PRS. I had my wisps made in paua rather than MOP.
This has always been my favorite as well, but the etched birds are what I would go for on my own hypothetical custom job.
I'm all about the cherry blossoms... .. and the Rosewood LTD. I like moons and the old dots on CE's and EG's too.