Actually the powersweeps were on sale, same price at the maxi-jet 1200's. Will the sweeping be more beneficial, I don't mind cleaning them if it's better for the tank? Should I mount the PH's near the top of the tank or half way down the side?
Sounds like you got a deal then.
The sweep should be beneficial as it provides alternating and random currents throughout the aqarium.
I have two of mine mounted about 4 inches below the water line and the other about 8 inches below the water line. Getting current down in the aquarium always helps.