After having one for a year, I agree with the opinions here. I got one because I was going through plastic wear rings every five hours. Then I noticed the SS ring was detroying my prop, so I had to get a solid front engine mount. That combination is working well, it keeps a good tight tolerance, but I think if I had just gotten a solid mount from the beginning, I would have been able to run a plastic wear ring just fine. Especially when it was discovered that the plastic ring can be flipped and used again, that is a more attractive option, but then again, I believe BRP's new plastic rings must be pressed in and cut out, so if that's the case, I'm happy to just stick with my stainless ring.