Finally got to throw some TI plastic today. I had 2 Buzzzes and a Stalker to test.
The Buzzzes definitely flew like they looked in Nate's video. Mine would hold their line for a period of their flight, then flip a little, and then a little more. They were definitely controllable and nice, but not really what I want out of a Buzzz. If I chose to bag these, it would replace my Fuses, which do everything these Buzzzes do, except better. Maybe for the sake of throwing fewer molds, but definitely not because they are anything very special. I could see lower power players bagging these because they are easier to get a straight flight out of. During my throws, they reminded me of the Buzzz version of an XL. Good, but nothing I don't already have.
The Stalker, on the other hand, will definitely be getting some more attention. It is very stable, and flies enough farther than a Buzzz that I could probably justify sticking it in the space between my mids and my Teebird. I found it glidey, but with a relatively strong forward fade, which kicked in probably a touch earlier than I'd like. I'm sure it will hit its sweet spot eventually. There is one hole at a local course that is a crush for a Buzzz, and an awkward 75% power shot for a fairway driver, so I throw different discs on it depending how good my throw feels that day. I think this Stalker might fit that bill. People use discs differently, but I usually prefer to throw at 90%+ power whenever possible, so this tweener speed is kind of nice.
Anyway, those were my impressions. The Buzzzes were long (for Buzzzes) and flew about 330' for me on a normal flat shot. The Stalker was flying 360'-400' depending on the line I chose. If you want to try one of these molds, I'd recommend the Stalker.