Four blade propellers operate smoother and quieter than three bladed propellers do. Generally, a four blade propeller is a good choice for a recreational boater that requires a smooth, quiet and all around good performing prop. The performance of a four blade vs. a three blade propeller is very subtle yet the four blade is a little better out of the hole as well as smoother in operation. Many of our customers find that the four blade performs okay but not great. The only exception is in the bass boat customer that has very specific requirements from their propeller.