Not meant to be a flippant comment but best to get the ones you need not the cheapest.
I like the ones with a decent leg re strength and distance they lift the SIB off the ground which also aids the skeg clearance. Prefer ones which spread the transom fixings over a longer distance for strong support.
Also need to decide if you want them to flip up or remove after launch to stow ashore or on the SIB.
I like the removable ones but I'm in a minority. So I go for the Trem non-flip type or OE Zodiac. When I've had flip up types I've chosen Trem again as they are long and well supported.