Just a note, I know we have many on this site that swear by gator/mulching but on the Ultra Cuts I've had I could see an immediate loss of the crispness of cut when going to these type blades (I even tried high lift gators). This is just me, in my type of grass, and I know others may have different results. Factory notched high lifts give me the crispest cut of any I have tried on an Ultra Cut.
Exmark Lazer Z X series
Scag Turf Tigers W/Briggs Vanguards Velocity decks,
My friend Mark says: "The secret to a good cut is never looking back!" .