i have had 3 esps, 2 z's and 1 glow nuke. they are all great. the esp will beat in quickly but then after about 6 hard months of use stops degrading. i have had an orange esp nuke since they came out(well, after the memorial day stamped ones) it is still more stable than my two z's. the z's are less stable but are now my main driver. the glow is kind of its own animal. it is about as stable as the esp, but much faster, i can hyzer-flip my z's, but the glow will never pop flat. with some work the glows can turn into some monster distance discs just because they can reach out there so fast. ive been beating in the glow, but it is taking longer than i thought.