That’s a loaded question. Depends on your definition of “quality” - might be a good thread starter.
3 things I evaluate with a tool is the steel type (ex: m2, m42, cpm-v10, other pm steels) for BG flute shape, for scrapers steel thickness.
I am not sure but I think all Sorby tools are m2 hss, and I suspect it is as good of m2 that is available. To step up you need a different steel. The benefit in a BG is how long it holds an edge. Same is true for scrapers, but I have only used m2 scrapers and cant evaluate the other steels and benefits.
Sorby BG’s have a parabolic flute (the best shape IMO) so there is no gain there.
If your current sharpening interval is ok with you, then you wont really benefit from better steel. If you rough out through bark, use wood with a lot of inclusions, etc, the better steel will be a benefit.
As others stated V10 is the best steel, unfortunately Thompson BG’s are V not parabolic. They do work well (have one) but there are some minor benefits to a parabolic flute with an Ellsworth type grind and a 40/40 grind.
I use Crown m42 and pm gouges as they have parabolic flutes.
To sum up the main benefit is different steel with a longer edge life. I see the benefit in my most used tools, 5/8” shaft BG, 1/2” & 3/8” SG. The other tools dont get enough use for it to pay off vs m2 steel. Try a better steel for your most used tool and see if it benefits your established turning methods.