Yeah, that's pretty close to what I'm trying to do - except that when he reaches down he seems to rotate the disc nearly vertical. I was trying to reduce variables (thought I got from push putt videos) by keeping the disc flat throughout the motion and not rotating the wrist.
As for your answers it sounds like you would like Gateways SS plastic (read up on their putters, they're all good), Pro D Challengers also sound like a nice fit. But use that criteria you listed and read on the websites of the companies about their putters. Then you can make a pick, but like I said Gateways and Challengers (beat ProD Challengers are awful nice). I may have more to post later...
"Does that make me a spin putter or some hybrid freak?"
There are certain components that are present in all putting styles. You are not a hybrid putter of any kind but you are either spin dominant or loft/push dominant. Realizing you're both is actually a step to getting a little better at putting. Knowing which one you are more of helps a little better. Your style sounds a lot like Nikko's "Swing Hyzer Putt". Also just as all putting can be classified as either spin or push they call all also be put in as either Hyzer or Anhyzer putting, this is something that takes longer to learn, figure out, and finesse. Youtube Nikko's putting and check him out to see if you like what he is doing. Barry Shultz also has a style similar to what you described. Also it sounds like you're push putting correctly by adding in the wrist flick.
"I've seen some of videos about push putting but every time I try it all I get a disc that wobbles / flutters toward the basket. I haven't figured out how to stabilize it without some spin."
Yup, you need some measure of spin. When it comes to the pros explanation of what they do they 1) forget a step/concept (because they do it all so much they kinda forget and 2) they leave something out on purpose because they don't want people to know it exactly or because it doesn't apply the way we think it does. So push putting does require some wrist. Just takes some finagling.
1) At this point I'd like something stiffer than the SSS Wizard but not as stiff as the DX putter I've tried.
2) I tend to like the bead.
3) Not sure I've tried overstable and understable putters enough to say.
4) I like a somewhat grippy material. I think it sticks in the chains better. I see this tightly related to question #1
5) Shallow rim - I've got relatively small hands and don't like the really domey disc.
6) Not sure, the feel of the material is the most critical.
In general I like the material of the SSS wizard, I'd just like for it not to be quit so floppy.
I've seen some of videos about push putting but every time I try it all I get a disc that wobbles / flutters toward the basket. I haven't figured out how to stabilize it without some spin.
So here's what I'm currently trying: Straddle putt (I like the idea of being about to put either foot behind the marker, with a straight arm upward swing and little flick of the wrist to put just enough spin to keep the disc from wobbling. Does that make me a spin putter or some hybrid freak?
So it goes a little something like this. Most Pro players, and darn near all top pros use Stiff, beaded, overstable putters in the 172g-175g range. Many top pros are also straight arm putters (or push putt/pop putt) and stiff putters are more advantageous to stiff arm putting. You can learn why this is so later.
So Process begins with thinking about this series of questions.
1) Do you like stiff or floppy putters? (straight arm putters usually use stiff discs, spin putters often use softer floppier discs)
2) Do you like bead or no bead? (some people don't like the feel of beads or think they cause release issues)
3) Do you like overstable or understable putters? (this is a separate question for driving/approach and putting)
4) Do you like grippy or smooth discs? (almost totally personal preference but to note most stiff putters are smooth and most soft putters are grippy soft)
5) Do you like shallow or deep rims? (this is more a matter of your grip and hand size)
6) Do you like Premium Plastic or Baseline? (the general rule of thumb is baseline plastic is best for a putting putter and premium is okay for driving and approach)
The most common putter plastics are Pro D, KC Pro, DX, Soft, Super Soft, Grip Line, P Line, XLink Soft, Xlink Firm. A few quick thoughts before I post other things later. Most of those pros I spoke of use a straight arm style because statistically it is more successful inside the 30ft circle that pros play by in order to be as good as they are. 30ft being how far they want to be able to make most of their shots from and anything outside that is bonus distance. A little more to come soon.