While I haven't really thought about, or noticed form that matter, the size of the high F tone hole... I can say that compared to my 2 previous Yamaha Customs and my old Mark VII the palm keys (and forked fingerings) play significantly fuller, and more free on both my Mauriat and CE Winds Dark Classic. Much rounder and fuller tone..also more flexible IMO which allows for easier timings of the pitches..... also, I prefer the forked fingerings anyways and find these fingerings very easy to speak and tune...