Hi again, they say there's less chance of leaks as there's more surface hitting the pad and it makes for a better seal and there more quiet with less pop or snap when pressed.I really like the feel you get with the rolled tone holes but saying that my 60NS horns are normal straight tone holes.When you try the 2 kinds you will feel the difference but 1 is not better than the other,just different but for me i would still pick the 67R over the 67 straight toneholes,the 66R and 67R are famous and loved for there sound,build and feel so pick the rolled tone hole model,there now legends in the sax world.Looking at buying a new alto ... possiblly a P. Mauriet...
Now there is new choices ... straight or rolled tone holes.
Is there benifits in one over the other technically or is it a personal feel thing?
I agree with JBTSAX : for what I know, Conn adopted the rolled toneholes (Conn did not patent RTHs!) to work with the Res-O-Pads, idea being that the Res-O-Pad would "hug" the lip around the rolled tonehole and therefore improve the pads' seal (so the pad would make contact on the side as well as the top of the tonehole).On today's saxophones with quality pads there is no practical advantage to having rolled tone holes. I believe it is nothing more than a marketing gimmick to offer modern saxophones with rolled toneholes. From a technician's standpoint they are much more difficult to correct when they are not level.