Our two favorite props for Suzuki DF90, DF115, & DF140 are the Michigan Wheel Michigan Match 06102- series for aluminum and the Powertech LNT3 for stainless steel. Both props offer OEM performance at great price points. We have yet to find props that work better on these motors.
When choosing either of these propellers, you will want to go pitch for pitch. For example, if you are currently running a 14x19 OEM Suzuki aluminum propeller and it is performing well, you should stay with a 14x19 in either the Michigan Wheel Michigan Match aluminum or a 14x19 in the Powertech LNT3 stainless steel.
The Michigan Match should run very similar to the OEM Suzuki aluminum and the Powertech LNT3 should give you more durability and better overall performance including top speed.