You get what you pay for.
My first AIO was the Corsair H50 which I got around 2009 I think. So about 14 years, still got it chugging away in an old PC... And that was coming from custom loops that I used to build.
Had the H80, H100 and currently running the H115i at the moment... And none have skipped a beat or presented any issues.
Obviously that is anecdotal, but if something did hypothetically go wrong, insurance has me covered, I just don't have the time and patience to build custom loops anymore, so these are a pretty convenient solution.
I just can't bring myself to using air coolers... Which are becoming increasingly un-viable due to Turbo boost features on CPU's which are driving TDP's up.
--::{PC Gaming Master Race}::--