those pistons really that good? heard good things, and would like to try. but that price id like a confirmation how good they really are. whats the difference. good pack? bump handling? etc......those have always caught my eye. do they have other hole sizes too. that would suck because then making a decision on which ones to buy. is it REALLY worth it? love for tekno drivers to try these out and give your input.......especially YOU PREZ, AND DANNY!!! lol