Tour guys have enough speed where they aren't worried about maxing out their distance at the expense of some accuracy. Lower spin lofts go further, but obviously also make it easier to tilt the spin axis. Hitting up is more and more important as someone's SS goes down generally, but I guess if you're a high SS player(let's say 110+) and want to hit it further, you could also focus on it. Some players run into trouble with consistent contact if they get far away from 0, like +3 and higher(and conversely the same thing for really negative), but it's pretty hard for most to achieve that positive with driver naturally anyway. It's all about matching your dynamics towards what you want from your game. Someone at -3 is going to be more accurate apples to apples than someone at +3, but they're leaving A LOT of yards on the table. All about finding the "sweet spot" between hitting it far and hitting it relatively accurately.