I have BMS ones and the quality and fitment was excellent, I know they are from somewhere over there (china, taiwan, etc...) but the guys at BMS do not mess around. They found a quality manufacturer and I have not heard one complaint.
2012 335is Sapphire Black/Red Dakota
COBB Protune | AFE DCI | AWE BOVs | BMS Downpipes | ETS FMIC
If you dont know...