I have the Ref 313 (non-VTA) arm on my Stabi S, but I also have the Ref 313 VTA on my Stabi Reference. You are correct that the VTA versions can be used on turntables which only allow for 9 inch arms.
The non-VTA versions allow for VTA adjustment the old fashioned way - loosen the grub screw, raise or lower the arm, and re-tighten the grub screw.
The 4 Point arms are theoretically higher performing arms than the Stogi Ref series. My dealer and someone else I know who has heard both thinks that the new 9 inch 4 Point 9 version is the best of them, being more dynamic than the 11 and 14 inch versions of the 4 point. Most people seem to rate the 4 Point arms very highly, but I owned the 4 Point 9 briefly and prefer the Stogi Ref arms, and I returned the 4 Point 9 for the 313 Ref VTA, which I am very happy with. I found the 4 Point 9 to be very detailed and quick sounding, but slightly lean and lightweight. It was, as is so often the case, more about hi-fi than music. The Stogi Refs are a bit less resolving, and a bit less neutral, but have a fuller, more robust sound which I find more satisfying. If you get the opportunity to hear both the 4 Point and Stogi Ref arms, you should of course make up your own mind which you prefer.
The non-VTA versions allow for VTA adjustment the old fashioned way - loosen the grub screw, raise or lower the arm, and re-tighten the grub screw.
The 4 Point arms are theoretically higher performing arms than the Stogi Ref series. My dealer and someone else I know who has heard both thinks that the new 9 inch 4 Point 9 version is the best of them, being more dynamic than the 11 and 14 inch versions of the 4 point. Most people seem to rate the 4 Point arms very highly, but I owned the 4 Point 9 briefly and prefer the Stogi Ref arms, and I returned the 4 Point 9 for the 313 Ref VTA, which I am very happy with. I found the 4 Point 9 to be very detailed and quick sounding, but slightly lean and lightweight. It was, as is so often the case, more about hi-fi than music. The Stogi Refs are a bit less resolving, and a bit less neutral, but have a fuller, more robust sound which I find more satisfying. If you get the opportunity to hear both the 4 Point and Stogi Ref arms, you should of course make up your own mind which you prefer.