Original sentence: German players generally prefer rotary valves while British and American playerss favor piston valves - the choice of valve type remains up to the performer.Piston valves are based on valves developed by Perinet for the saxhorn family of instruments promoted by Adolphe Sax around the same time.There are advantages and disadvantages to each valve style, but assertions concerning sound, speed, and clarity are difficult to quantify
Edited sentence: Also, many players believe piston valves offer easier articulation of difficult or fast passages than rotary valves, but none of this is absolute and choice of valve types remains up to the performer.Debate abounds as to the advantages and disadvantages of each valve style, with assertions concerning sound, speed, and clarity commonly proclaimed but with little or no scientific measurement.Overall, it is preference; each has its advantages and disadvantages.Piston valves are based on valves developed by Perinet for the Saxhorn family of instruments promoted by Adolphe Sax around the same time.The German tradition prefers rotary valves; the British and American traditions favor piston valves.These preferences are probably based as much on the original popularity of saxhorns in France, Britain, and America.This is why many American tuba players will buy a piston contrabass CC tuba and a rotary F