I wouldn't use Maxlife because for virtually every application there's a better choice. Need CVT fluid? Use CVT fluid? Dexron VI? Toyota WS? ZF 9 speed? Just use the right product.
I'm good with Group III 95% of the time. They've achieved some impressive performance from it. Very good viscosity index at a fraction of Group IV prices, which is what consumer cars need. Would I use it in a drag only trans with a transbrake? Not a chance!