I purchased a new Stander X with 52" Aerocore deck in March. The factory blades were Oregon fusion with only the Wright part number (71440009) stamped on them. They have a half inch offset with notched foil.
I am also using Oregon 93-010 which is listed as a Bob-Cat blade. It is not a Fusion blade and does not have the notched foil. They are an offset blade.
Both of these blades do a good job for me.
I have the Oregon G5 596-344 blades too. They did not do well this spring with the heavy rains that we got. I will try them again soon.
Hustler Super Z 60 - Dixie Chopper XWD3500-60 - Wright Stander X - Echo SRM 2100SB - Echo PAS-260
Echo PB-650T - Echo PB-770T - Echo HC-1500 - Shindaiwa T2500 - Shindaiwa PB270 - Shindaiwa PS344