don't forget that if you want to stay copper/brass, the best you can do is US Radiator 4 row. You can only get 1.25" tubes with aluminum rads and only a few companies offer it.
From a cooling and volume standpoint, 4 row is still not even as good as 2 1" rows. Let alone 2 1.25" rows.
The Griffin radiator does NOT cool any better than the Cold Case radiator. They have the same fin spacing, volume, tank size, production methods etc.