Electric fans and shroud recommendations

All I'm going to say is my Contour fan and 26" 3 row champion radiator doesn't even need the high speed mode on the Contour fan at all. Sub-$300 cooling system working perfect for over 9 years now.
Champion radiators are average at best and not a high performance radiator....kinda like Cold Case.......now with that said if you have average power, meaning 500-600 range then you will probably get by with average parts that are cheaper than very good parts that are needed for high horsepower setups. The higher up the power level a person goes lets one realize the inadequacies of cheaper parts......they flat won't work well.