I CAN hit 400', but not with consistency. Oddly, Whenever I do get a rip that distance, it's usually pretty accurate, and I have no idea why. When I'm pushing for that distance and fall short, it's usually a bad throw that turns over too much, is angled too far up, or hits the ground at speed and does something nasty.
However, I comfortably, consistently, and accurately can drive in the 340-360' range on flat surface with a little wind. Whenever there's no wind I feel like I can hit 400' every 3rd drive or so if I'm throwing clean that day.
That being said, I voted for 425+. If I could comfortably hit that 440' range, it would really make some of those tricky 350' drives (and greens/landing zones) far less scary for bad roll-aways and skips if i could disc down to a mid or a slower fairway driver. I don't throw anything very fast other than tossing a Halo on the rare occassion, but I dig my fairway drivers for anything under 360'. I'd love to push those out to 400' and leave the 350 range to mids.
Now, if I could learn how to consistenly putt.... My game would be pretty salty. I'm so streaky with putting. Some times I'll go weeks without a three putt, and if it's within 25', it's a gimme, within 40' it has a good chance. However, then I'll completly and suddenly fall apart (sometimes in the same round that I was earlier putting great), and I'll ride a bad wave of missing 12'ers on the reg for a solid month. It makes no sense.
