Radiator questions

I have been using a aluminum griffin gm style radiator for years with a 16" electric in front and a flex type fan on the motor. No shroud. The motor is an iron headed 570 hp 440. I have a champion CC375B new radiator I can put in. The core sizes are the same, 26x18. The griffin is cross flow with 2 1" rows, the champion has three 3/4" rows. I also have twin 10" electric fans and a flat aluminum shroud for them. The shroud can work on either radiator. My question is, which radiator is going to cool better? I will most likely use the twin fans exclusively with out a mechanical fan.