I still have the one I bought in Moab (like $12...ouch...but if it lasts it was worth it!!!!) that was a brand I never heard of (sold at one of those Mom & Pop Parts stores!) and it works like a champ..rattles properly when checked...no problems! I figure I'll just keep an eye on it.
Plus, I did have good luck with the PCV sold @ NAPA in the past, but only used that brand twice. It was made in USA and cost like $8.
I still remember the old days..lol..I had a '69 Plymouth Roadrunner and the only pollution control was a PCV...and it was made out of stamped steel with a steel ball bearing inside...NOW that sucker was good for 40+ years I'd bet!!!!!!!