, cheaper, but less efficient, but does this really matter at hull
Also it's redneck knowledge that if you hit something really hard, an aluminum prop will break, if you hit it with a SS prop, the gear
case will break. Yes, both have rubber hubs.
SS is prettier, but I go with aluminum on little motors, but SS on bigger higher HP boats where efficiency matters more.
Seeing as how it's very un-likely you'll ever hit anything with a prop, maybe the SS is worth the extra money
to look pretty?