sorry im sure this has been beaten to death but i have a 4mil stock cylinder right now and wanting to go to 10 mil. ive herd some great things about 10mil. what would you build ? there is so many different ways to go. im looking to build a drag quad but i dont want something that run it once and have to sit forever cause its to hot. this will be in the dunes. im thinking 521,535,611. please some advice on experience with these. thanks in advance.