All boosters are great. My favourite of course is the party booster but I haven't seen it in a very long time LOL.
While the coconut wheel can do wonders, it sometimes destroys what you work so hard to set up.
I prefer not to win the timed to boosters because sometimes I work so hard to get a booster because often it is one that I can't use on the level I'm on. Also I may not have enough lives left to use it. I've noticed that we don't win The x on this as often as we used to so I'm okay with it now. If they are just given to me though, of course that's just wonderful!
It's fun playing Candy Crush and it occupies a lot, I mean a very lot of my time! KEEP CALM AND CRUSH!