Ive heard bad things about re-cores and for an extra £80 i'd go for an Airtec, ive just upgraded from a standard rad to an airtec and the fans control the temps alot better and it stays cooler when driving around. Alloyrads are an "upgrade" for a reason! The only thing is my airtec weighs a ton, dunno if all alloy rads are heavier due to wall thickness for strength etc?