I've owned nothing but rip curls for over 20 years. Never had a problem. I'm mental about caring for them, fresh water rinse each session, wash them in baby shampoo 1x a month, never dry in sun, hang dry properly. My suits last for about 4-5 seasons before the seams wear enough that I have to touch them up with repair glue.
That said, I just shipped my 3yr old winter suit back to Rip Curl for a major neck seam tear, I caused by rushing one morning. Was quoted $35.
Although I do find newer rip curl and oneill gloves and boots don't last at all, they leak after one season.
I used to get 10+ years out of boots and gloves - would only replace them because of stank. Now they're crap.
my winter suit is a ripcurl ( Fbomb zipperless and its about 5 seasons old with heavy use and this is the first year that the seams are failing. The rubber is still pretty supple so maybe i'll might just repair them to save money.
i do all the same things you do with my suits except the baby shampoo. why are you shampooing? is it just to clean them or does it condition the rubber or something?