Well all three bands are now here. Pretty much anything blue is a winner in my book, so Delft is great and an obvious choice for me. It looks very similar to Royal (which I do not have). I'd seen the photos of both Hyper Grape bands and knew I had to order them. Upon opening them up and having an in person look, they are fantastic. If I had to pick the best of the lot I've ordered, it is hands down the Hyper Grape Sports Loop.
As I've mentioned, I am a huge fan of blue with Navy blue being one of my absolute favorites. The Hyper Grape loop has obvious purple, and green colors but in some light and from a distance it almost looks navy. When the light hits it right, you can see the purple come through beautifully, the black plays nicely on the trim--though a dark purple would have been over the top fantastic. Apple's website is helpful but the photos here I generally find to be more helpful as to what the bands actually look like. This is not a knock on anyone who's shared Hyper Grape Sport Loop photos--in fact thank you for sharing and the encouragement-- but pictures just don't do it justice.
Black Nike Sport Loop will be the next one and Cerulean is growing on me, it just might find it's way in my collection. I agree with the comment, it looks very sea/beach inspired.