I just picked up a Orange 172g Z Stalker to try out after hearing good things about them. I throw Buzz's and love the thought of this disc being a "longer Buzz". I have only been out to play once since I got my Stalker, so I only got to throw it 3 times. It seemed to me that it was understable at high speed as it tracked right(RHBH) as soon as it left my hand when thrown flat. From the 3 throws I had so far I like it, but I am not sure if it's going to take the place of my Eagle-X's. I can tell you that I like the feel of the Eagle in my hand better, but it could just be because I am used to them.
Will know more about the disc in about a week or so, after I get out and play with it some more. I need to get out and try different lines with it to see what this disc is capable of before I make my final judgement.
The Buzzz is considered a mid-range driver while the stalker is a full range driver.
The Stalker is sharper and faster than a Buzzz.
The Stalker is a slow driver with more control, the rim is not as sharp as most drivers.
The Buzzz is going to fly a bit straighter than the Stalker which will curve a bit at the end, as the spin dies.
Now available in GLOW!
When I first got it I hated it. Could not get it to do anything I wanted. I kept at it though and now I find it is a nice disc that flies straight. Good disc that is very forgiving and for me the very forgiving part is the best part.