Draupnir vs Space Cadet. (plus a little extra!)

What is better? Draupnir or the Space Cadet? Why? Are they worth the price? I want to save up for one. I got interested in the Space Cadet due to its super amazing fingerspin design. But I have also seen mrmatio, and his Draupnir lasts ages on his tutorials and I think that would help me learn his tricks.

Also, What is all of the hype about the skyva, all of a sudden I am seeing the skyva talked about everywhere? Is it that good and worth getting? What is so good about it?