First off, blizzard discs go far....period. There's no denying this. I think on level ground with moderate wind I can get 50 extra feet out of them. However, I also agree with some of the drawbacks. I think it is very difficult to go back and forth between normal heavy discs and these and expect to get an accurate release point. I also think they are more susceptible to dancing in the wind, especially with up and down drafts. Sometimes this can be good. I've had two throws that were into a slight front right wind that lifted late which actually gave it time to S out which was probably the difference between a normal throw and these. The lighter weight allows them to stay in the air longer.
This leads me to something Dave McCormick told me years ago. The trick with making discs is going to be to combine the spin and speed. When drivers hit the ground they are usually still spinning quite a bit while putters and mids are not. The key is to keep the driver in the air until it runs out of spin. I think these are a step in that direction.
I also agree with Chase that these can be just as accurate as any other disc with lots of practice. It's simply getting the timing down. I've only thrown the Boss and Destroyer but don't have enough reps with either to really discern anything other than the Boss is silly fast with a tailwind!
Now onto a much more contraversial subject and that is JnB. I don't want to crush anyone who likes it. I just want to point out that there's a huge difference between liking something and it being good. I enjoy playing JnB, but I think it's a terrible course. You can argue all you want about perception, but the reality is that there is absolutely no scoring spread for most players. Of course there are exceptions which are the extremes and not the norm. Put a couple 1000+ talent or distance players together and they can possibly deuce a few of the *par 4s*, and conversely shorter players or sub 950 players are gonna have trouble making 3 on many of the longer holes. But for many average to good doubles teams you're going to see in upwards of 14 or 15 3s. 1 and 8 are fairly easy, but the rest of the par 3s are easy to miss, and there's really only 1 hard par 4 which makes most of the other holes pretty easy 3s.
Now that being said, wind can really make the course. It can make some of the holes really hard, and it can make some of the long holes reachable which is definitely fun. And obviously there will be more scoring spread in singles than in doubles so I look forward to seeing how it plays.