Looking for a cheaper alternative to the Neutrik connectors I tried these. I've also tried the Amphenol ones, both are good, but I think I prefer these.
They have a lower profile than the amphenols (very similar to neutrik) which in some applications is crucial, plus they seem to plug in/out a bit easier without putting extra strain on the socket, which is a frequent problem with some of the cheaper female plugs I've seen.
The only minor complaint I have about these is that in order for the transparent ring to stay tight and not loose, you need to screw the plug really tight and that takes some effort, but it's not a big deal.
Regarding longevity and durability, I can't really say how well it will withstand the test of time since I haven't used this plug much and I also tend to be very delicate with my cables. It looks quite robust, but in my opinion, if you want assurances, just spend the extra money on a Neutrik which has been tried and tested for many many years, at least for cables that are used a lot. I would be more than happy to use these for cables that have some occasional use, like an adapter.