The problem with this poll is that the Star Katana is so different from the Champ and Pro Katanas that they are completely different discs that have to be thrown completely different to get the near same results. I have not touched my Pro Katanas in a month, I can get a more consistent and soft turn out of the Star so I kicked the Champ out of the bag and replaced it with a Monarch (the same shot but for a shorter distance). Plus, I know the Star will finally fight back at the end of the turn, aiding in landing flat or correcting itself in case it turned too far right.
The same problem exists with the Nuke. The ESP is so completely different than the Z except if you are talking about the slightest tailwind. The ESP is too unpredictable in a headwind. While it probably is a good hyzer flipping disc, I am not good or consistent with that shot, meaning that to throw relatively flat, I do have to back off a little (although I still get great distance with it). If it does flip, it is going straight into the ground. The Z Nuke however has more HSS and LSS, meaning that it is far more versitile. It fights a headwind better. Finally, it can handle all the power I got and as long as I get a clean release, it will always fight back at the end. Plus, the Z Nuke is the first forehand disc I have been able to get to go more than 300 feet accurately (my forehand is almost as bad as my hyzer flipping).
So, I carry both the Star Katana and Z Nuke in my bag and they can cover all of my maximum distance shots.