Granted they are budget parts but I've always run them and never had a single problem
Yeah same here, always used PIGs the sealed and roller bearing type and never had an issue with them.
Got PIG Pro DH in my DH rig now that had caked and seized bearings when i got the frame, cleaned them out and worked lottsa grease through them and they are as smooth as now.
Personally i can't fault PIGS especially for the money.