Had one ball level now. Died a few times because I was trying to get every coin and star bit.

Nowhere near as annoying as the ray ones. Its because I rush the ray ones though, they're so not fun that I just want to get them out of the way.
I'm not sure if I like the comet things. I've had a speed and a cosmic one and both weren't all that fun, I like to take my time over levels and don't like being forced to speed around like a mad man.
All in all though, this is an awesome game. Such good fun. So much better than both Sunshine and 64. I like how you can unlock loads of levels really easily without having to complete every single star and I like how when you die you don't have to start the level from the beginning again (mostly). Thos were the reason I stopped playing Sunshine, I got stuck on some really irritating stars that made you climb up through nets over a ship yard really high or something - one small mistake meant game over. I don't have the patience or time to try something over and over and over again.