I have small hands and short fingers. Plus the bones in my hands and wrists are fuzed thus I have a hard time stretching here and there. I had a very hard time with the international as, if i recall correcly, the toneholes on hte RH are abnormally far apart. we're not talking much, but enough to cause me a big issue.
Each clarinet I play I normally compare to my clarinets. I also check thumb position which, for my size hands, greatly affects how well I can move around the keys, plus the TH spacing and the location of the spatula keys. Which, they all look the same, but vary in height away from the body, and some are rotated more to ether way or may be closer or farther away from the 3rd tonehole.
for me, each clarinet is an interesting test. buffet R13s used to cause me pinky issues which is why i avoided them for so long. Which is the reason I played Noblets for so long .. keywork was easy for my hands. I added 1/4 inch cork to the thumbrest which pivoted my hand and allowed my 3rd finger to stay on the TH when i had to stretch for the spatula keys!!
It was a consensus to me and my customers that those spongy foam rubber pads deadened the tone a bit. But it's up to each individual player for their own ideologies. they sealed great as they're foam and adjust to uneven installs. But also give a squishy feel, et all. I may have adjusted heights etc but that particular set of eatons/1010s was a long time ago.
but as i said, I love the Eatons non-the-less