I was wondering if anyone had a preference on Ti Retainers. I've seen two brands both advertised for 160 on various sites. The two brands are port flow and skunk2. I'm gonna upgrade my valve train. My head is already in the machine shop and some of the brands I'm getting inhouse, but they want 190 for retainers. That's my story, so if you guys could shoot your opinions my way it'd be much appreciated.