RE: single pin adjustable vs. multi pin
cravingame, you really need to take a look at the PLASTIC sight you are using and compare it to an HHA OL 5000. I think you'll find that your's has about three times as many potential problem spots---screws and loints that can come loose or just plain rattle apart, not to mention the plastic adjusters and plastic pins that I have seen break. I guarantee this can't happen with an OL-5000unless maybe you drive your truck over it, in which case the bow would get more damage than the sight. At any rate HHA would replace it, no questions asked.
I'm not dictationg that everyone, you included should shoot one, but if comparing one against another then you should actually study each before making rash statements.
Believe me, I have very tight criteria that I follow for picking sights, and plastic is not in the description.