I've actually found brass fittings worth the extra cost in the long run. Sure, nylon reinforced ones are a step up from basic plastic, but like you said, they still degrade eventually. Brass fittings don't seem to care about temperature swings or cleaning chemicals—at least not in my experience. Had one under a rental sink for nearly ten years now without a drip... sometimes spending a bit more upfront saves headaches (and money) down the road.
"sometimes spending a bit more upfront saves headaches (and money) down the road."
Couldn't agree more. Learned this the hard way myself—had a nylon fitting under a kitchen sink in one of my rentals. Thought I was saving a few bucks until it cracked during a tenant's vacation. Came back to water damage and mold remediation bills... not fun. Switched to brass fittings after that fiasco, and haven't had an issue since. Brass might pinch your wallet initially, but trust me, it's cheaper than dealing with water damage later.
