I had one of these knocking around till recently, it was still in perfect condition after all those years. I never favoured the button style though; I think 'Zipsticks' had a similar button setup, quite sensitive. The stick on these is very rugged; the amount of quickshots I went through back in the day...You would not believe.
I recall now that on occasion I cannibalized broken joysticks and repaired them. Damn amiga games were so tough and I'm so stubborn.