Koyo doesn't have a warranty on the aluminum non-OEM style radiators anymore. If you get a non-OEM style, I'd go with a Fluidyne 2 core. Having said that, I have an EG with the 3 core Koyo and have never had any issues other than some corrosion on the top from standing coolant. Regardless of which one you get, be sure to use Red Line Water Wetter or equivalent to prolong the life of the inside coating. And I got mine for about $280 shipped from JHPUSA.