You should definitely give it a try. The most major brand I know, Corsair, NZXT, and EVGA have a great warranty in place and their products have the R&D so you don't buy a leaky system. I remember reading somewhere, the chances of buying a defunct AIO is 0.5%.
These companies stand by their product. If they leak due to user error, then yes they won't cover it. But they will do an investigation. If it turns out a leak was due to manufacturer defect then they will cover hardware too. It's not unheard of.
I have a Corsair H100i running every day for the last 5 years without issue. I'll probably upgrade it due to "wear". But, the product has been solid.