We should almost start another thread here so we can have one that's actually comparing the spinners, and one that debates the direct roll that vendors should take in the community. I think both could be informative threads, but this one is supposed to be about the spinners... so lets get back to it.
So, I got my Turbo Twist High/Low this week and I can add my thoughts to the mix. Let me start by saying I am absolutely the last person who should be reviewing a spinner. I believe the only spinner game I've ever played for real is TRON, and that was 20 years go. That being said, I choose the Turbo Twist based on its tiny foot print and it's claims of being high resolution (also, the talk of the Apache grind had me concerned but as we've discussed in this thread this may be a non-issue at this point). Digging into the threads and learning about the how different arcade games used different wheels in their spinners, and that some had more "teeth" than others and therefore requires higher resolution to emulate, I can see real value in having the highest resolution spinner available. Ultimately it will allow for more flexibility, even if the games that actually need it are few in number.
This is the first product I've ordered from GGG, and man was it refreshing to actually get a sheet of instructions describing how to install it. For a newb like me, this is invaluable and keeps me from spending hours pouring over the vendor's site and these forums to figure out how to make stuff work.
I am in an extended prototyping phase of my controls, so I only have the spinner mounted in a cardboard box right now. And like I said, I have very little experience with spinners, but man, is this thing smooth. It feels really, really nice. Being high resolution, I had to dial MAME's sensitivity way down for most of the games, but after some tweaking it felt spectacular with every game that I tried. Also, the stainless steel knob has a weight to it that just feels bling. Unfortunately, I can't comment too much on the push/pull part of it because 1. I suck at Discs of Tron and haven't gotten to the levels where you use it, and 2. The cardboard box I have my controls in flexes when I push and pull the spinner, making it very uncomfortable to use. I'm going to need to get it mounted in wood before I can really make a judgement on how it feels. It seems to be working just fine though.
That's about all I have to offer at this point. For how negative this thread has gotten, I don't want to sit here and gush all over it, and I can't compare it to any other spinner at all, but I'm really satisfied with it so far.