Well, Daryl of the United States
All it's supposed to do is keep water out. It does. So, I don't see how it is over rated. I used teflon packing once and it worked pretty good except it had to be tightened more often than flax. I then had dripless packing installed but found the stock stuffing box would not accept the larger packing, so had to replace it. It still leaked more than I wanted, so I replaced it with a PSS. Since then I have installed two more. As to expense, it doesn't seem too very expensive at a couple of hundred dollars compared to other boat gear. I just replaced the bellows on my current one with 1400 hours. The one I took off looks new. Having said that, the downside is to remember to burp it when you launch and to be sure the shaft alignment is correct. It just depends how much the bilge water annoys you. I do agree that the strut bearing can be a bear to replace, but with the proper press, it should be quick (notwithstanding the two hours the yard just charged me). Anyhow, I just wanted to point out that some of us do think it's a good product and well worth the cost. Rick D.