For me it depends, I'll get

and

if I'm going for a high level. But I'll ignore them if I'm going for score.

and

increase my skill greatly and allows me to reach the late 80 - early 90s with ease, but it makes it harder for me to get big Crystals.

allows me to breeze though the early levels but increase my chance of dying in the later levels.

makes it easier to beat the later levels without dying but it make me go slow and run out of time if I'm going for big Crystals.

is a must have if I'm going in PDs like PD 46, PD 64, PD 51 and the like.
All other power ups are must haves.