I
like 'em!
Yeah, they click - but to my ears, they click no more than the D-ring. Besides, when I'm immersed in my book, I don't hear the click(s) at all. But, then again, I've had entire conversations happen around me while I was reading that I didn't hear ... so, YMMV.
What I like is the convenience. I have both the upper and lower wing buttons set with "page forward." I also have the left-hand and right-hand side of the D-ring set on "page forward." I use my thumb to operate the buttons while reading. The attached pictures show the three different ways I can hold the device one-handed (had to show the left hand - as I'm right-handed, it's hard to hold that durn camera properly with my left hand...). But, I can hold the PB360 the same way with my right hand - so that gives me six different ways to hold the reader.
And, I like the fact that the wing buttons (and the D-ring, for that matter)
are a bit harder to press. No accidental page turns for me!
As a self-professed fan-girl of the PB360, I just want to let people know that the wing buttons, for some people (or, maybe - just me!

) are
great.
And, Pocketbook, please keep them on the PB360, along with having the buttons on the side of the device ... and the G-sensor. IMNSHO, it makes holding the PB360 the most ergonomic for long periods.
Disclaimer: This is just my opinion, and, like ... noses - everyone's got one!
Marilyn