Opto xXx and Z Flick seem to be the best for consistent distance, but you have to throw with a lot of power to get the full flight out of them. I have an Opto Trident that goes almost as far and doesn't require me to risk damaging my shoulde r to get it to work. Another option is the Z Flick in lighter weights. I have one at around 160g (I've seen them as low as 148g on EBay) that goes just as far as my max weight Flick (Maybe 5' less at most), and as an added bonus, it makes a great forehand driver as well. The only drawback is it gets blown around by the wind a little more, but I throw most of my thumbers in the woods so wind is less of an issue.
90% of the time, I reach for the Trident though.