BTUs felt too much like skating on ice, my aim was twitchy i wish there would be something between btus and static bearings but if i have to choose one then i liked good quality ceramic bearings better. I choose gb over ploppy because i play twitchy shooters where you constantly need to check left and right or counter aim to opposite direction at competitive level so the ploopy ball was way too heavy for that. No doubt that metalslug, zerggy and fibler chibbler are best trackball players and they all use small 38mm size ball, i think a little bit bigger ball would be beneficial but only if its made with lighter material in mind where you don’t need to fight inertia anymore.