Tip
I think there are many good jump cues out there and each shooter has to find "their" jump cue, just like they have to find "their" shaft. I also think the tip is so important.
I quit using G-10 for a jump tip as it marks the cue ball, I like the Samsara and it is good for breaking.
I bought a jumper from a buddy and it is 41" long with a purple heart shaft and a really nice curly maple butt. Some kind of a white ferrule and I think a White Diamond tip, it jumps good.
"Joey in Cali" put a phenolic tip/ferrule on a Dymonwood shaft I have for my Pat Diviney jump/break and I jump better with it then any jumper I have used. I'm not real accurate, but I can jump!