-Nissens - high end brand
-BEHR - OEM pretty much - high end
-Spectra Premium - Chinese but has quality control and ISO certified - Got mine for like $130, 3 years in, no issues
-Chinese no name brands like ECC from rock auto - I would never use these.

__________________
1976 Mercedes 240D (Sold)
1985 Mercedes 300D Turbo Diesel: 500,000KM
1986 Mercedes 300E (Sold)
1988 Mercedes 300E (Sold)
2002 Mercedes C240 (Sold)
2008 Mercedes C350 4matic

A great site for purchasing industrial rubber products!

Industrial Rubber