Korean BBQ Buffet in San Gabriel Valley?
East or West SGV? East SGV you have plenty of options, and I'm not going to recommend any, since they're all kinda sucky in the same way. Yelp it.
WSGV AYCE KBBQ is slim pickings. Hwa Ro is one of the few choices. There are 2 other KBBQ power houses coming, but don't expect them to open until end of the year.