If the gator blades have been working good for you then stay with them. If you want less mulching and more side discharge then go with high lift.
If you cutting tall thick grass and the deck is getting clogged with grass them go with a high lift.
High lift blades will not last as long as the gator blades
High lift will leave less clumps of grass.
If your not letting the grass get to high then I would stay with the gator blades
(( racing is the only sport that you need two balls ))