I've posted on this topic several times over the years. Obviously the idea of the "best" is highly subjective, but here my 2024 update:
First of all, I break down jump skill into three categories:
1) Hit the object ball. Just don't give up ball in hand, and maybe get lucky.
2) Make the object ball. As your jump skills increase, you should intend to pocket the ball more often. This is far more difficult than most people realize: shot distance, distance of jump, height of jump, ball bouncing, and shot angle all impact the result.
3) Control the cue ball. At the top tier of jumping is the ability to do all the above and control the cue ball. In addition to making the ball and getting position, this opens up other options such as jump safe and jump kick. This is what makes the pros so deadly at jumping.
There is nothing wrong with a J/B for most players. They cost less and take up less room in your case. A good J/B can handle scenarios 1 & 2 above. Where a high-quality dedicated jumper really shines is in scenario 3.
J/B cues I've owned:
- JJ: super cheap, breaks OK, jumps OK. A good first J/B for a beginner player only looking for scenario 1 above.
- PureX (4pc): there is no better option in this price range, breaks great and jumps OK. Good for 1 & 2 above - I often recommend this as a first option.
- Samsara: compared to other J/Bs, this one doesn't break as well but jumps better. Good for 1 & 2 and possibly 3.
Dedicated Jump Cues I've owned:
- Jester
- Black Magic
- Tadpole
*Do NOT waste time or money on these or similar jumpers. The J/Bs mentioned above outperform them.
- Jacoby: a good entry level dedicated jump cue. Something about the brass ferrule bothers me, but I used one for a couple years and it was fine. I wouldn't want a lesser jump cue than this. Last I checked they were more affordable than the others on this list.
- Lomax: Very very good, my first entry into the top tier jump cues.
- Hanshew: The best wooden jump cue I have ever used, slightly edges out the Lomax. I loved mine and still have it.
- Air Rush: my current jumper, which I bought mostly because I wanted carbon fiber (matches my other cues and doesn't nick). Not particularly better at jumping, but it does offer better cue ball control than the others.
I won't declare what is best for anyone else, but right now what works best for me is the Air Rush. (I've also tried the Propel and seems to be on par with the Air Rush.) If Hanshew ever makes a carbon fiber jump cue, I'll be first in line to try it out.