Dye core all the way, used my Chrissy pressies (dye sliders,knee & elbow pads) for the first time this weekend (understanding wife for allowing me to use them, anyway she gets embarressed when I start crying and sulking) they were superb.
I actually started sliding into bunkers
and they didn't move all day.
P.S. sorry to the guy who was behind the bunker I slide into, seventeen stones of ex rugby playing para hit it, the poor bugger shot about five foot out of the barricade
Can't really comment on the JT only ever seen them on a trade stand, but they look pretty good