I use a Spyderco sharpmaker and sometimes strop on an old leather belt if I want shaving sharp. I don't need it any sharper than that. Alhough it is cool to impress yourself or freinds if you can get it "scary" sharp.
Until I read those last links, I had thought that making a blade "scary" sharp & able to shave hair was the ideal goal. Now I understand better about the wider angle giving a more durable edge when you have a more average (softer) steel.
The Shun knives can have a very thin 15-16° angle because they start with a higher quality, harder steel. I just sharpened my two "Al Capone" knives to about a 22° angle on the 220 grit stone, and was able to get them easily slicing paper, but stopped short of using finer grit stones to get them arm hair sharp.
I can see how I ruined the edges using the carbide (Samarai Shark) type sharpeners, but it was very easy to put back an ideal angle for the particular knife. I have sharpened about 10 of our home knives so far.
I took these shots of the 3 Shun knives. Used different camera settings trying to show the blade design. Still have to pick up some green acorn squash.
The beauty of these is indescribable.