Again Lee, it all depends on the courts. Tretorns don't bounce @ all where I play & they ruin your arm. The ultra-slow hardcourts I play on don't allow for Penns to be used unless that's all we have handy. The Dunlops bounce the HIGHEST b/c they are the liveliest tennis balls for the courts we play on. Wilsons bounce 'in the middle' if we're comparing Penn, Wilson & Dunlop.
"Stroke it, don't poke it." "Striving to keep our balls in play."