The best way to jump balls in is with your playing cue, imo. I jump with my Lambros which has a triangle tip. I've played with a Moori medium for a long time and couldn't jump. The moment I went back to a triangle, it was a joke.
Assuming I'm not mega close to the impeding ball, I'm jumping to make the ball - not hit the ball. I think those little jump cues are great for hopping little distances and high up over balls, but I find them harder to jump accurately because of the bounce factor. Good jump technique with a playing cue allows you to rocket the CB at barely over 2.5" with little bounce. You can also jump with follow/draw a lot easier with the playing cue.
People are so used to jumping with little phenolic cues, they lose the technique. Don't get me wrong, they're great for vertical jumping out of safes - but if you have room to do something, I like my playing cue.