I always thought that Japan was known for making electronics, but apparently it's all about the billiard cue tips over in the Land of the Rising Sun. First it was Moori, then Kamui and now we've got the supremely awesome G2 pool cue tip.
My favorite.
Have been using G2 Medium since they first came out. Intermittently try others but always come back to the G2.
Never had any problem with mushrooming and they last a long time.