Let me just say that I also bag a Gator and a Zone. The Buzzz OS just fills a cool gap that I didn't even know existed. I use my gator (champ) for those mid range need-to-hyzer shots as well as short range spike hyzers. I use my Zone for the decent distance shots that need glide but must fade at the end. The Buzzz OS, though, is my disc of choice when I *can't* have glide and I need it to not turnover. This thing is great for a backhand flex that will reliably drop out of the sky and plop on the ground when it's done. I mean, it truly has the least amount of glide of any disc in my bag. Like Berg glide-less. Definitely not a distance disc--if that's what you're looking for, go Zone. 

I really like throwing the Buzzz, it's my workhorse midrange.  I decided to give the Buzzz OS a shot and have been pleasantly surprised.  It has a strong fade but is not extremely overstable to the point where it just dumps midway through its flight.  It has a good amount of glide like the normal Buzzz but enough stability to fight out of flex shots or just resist turning over when I need to power up on the disc.  I've found that it makes a great forehand disc since its so torque resistant.  To me the biggest strength of the disc is its ability to be used as a "placement" disc.  Because of its controllable speed and its rounded rim it doesn't seem to get much ground play, unlike a Firebird or an Eagle which tend to finish with a bigger skip.  This lack of ground play can be very useful when trying to stick a green or if there is OB surrounding a green.  I think this disc is slept on and I don't see too many other players bagging it in my area.  

If you want something higher speed than a over stable approach putter, like  a harp, zone, pig but don't want to do a fairway speed, Buzzz OS is that for you, it  fits into the hand nicely for me,  i like this plastic cause its grippy but not to grippy like the ESP plastic can be in the heat, its pretty stiffy too, and has very dependable fade on its flight.