I currently own an Air Rush, Air II, Jacoby, and the Cuetec Avid Surge. I have also recently hit with a Cuetec Propel.
Cuetec Propel and Air Rush are both excellent top of the line modern jump cues. Really can't go wrong with either. They are pricey though. I play with the Air Rush as part of my main setup but I have to say I was surprised how easy the Propel was to jump with...I think it might be a tiny bit easier to jump with than the Air Rush, it's really good.
The Predator Air II is pretty nice and has the modern design with a two piece butt but is a little shorter and less expensive than the Air Rush. Only used it a bit, have it in a case with all traditional wood shafted cues and it's probably the best and most versatile wood shafted jumper I've used.
The Jacoby was my first jump cue and if you jump using a dart stroke I think it's the best. It gets up so easy using a dart stroke, it still surprises me sometimes what I'm able to get over with this cue. But....for a more traditional jump stroke I find it a little too short, that's it's big downside.
The Cuetec Avid Surge did not impress me. I bought it before the Air II for my wood shafted case but I found it surprisingly hard to jump with. Not a fan.