Consistant pressure and ball/barrel bore match = accuracy. Get a decent reg (consistant pressure) and a barrel kit to match ball/barrel bore. Single bore barrels will shoot paint that best fits it which is why people have different views on the same barrel. Get a good barrel with interchangable bore sizes (inserts) and you'll never have to buy another barrel again. I use a 14" Deadlywind fibur with freak inserts that cost $99 from the manufacturer, shoots great and is quiet. No reason for another barrel unless I break this one.