i play sax for 9 years or so and am using my 2nd one (i got a new one because i play regularly and i thought maybe after 6 years or so it was time to change and the price allows for it).
i have tried many more saxophones or mouthpieces than ligatures because I jus think these are good enough - they do their job fine: they are durable, reliable, reasonably priced.
PS: i do not play altissimos much and if i did more of that i would be more confident in saying these can hold their ground against others - so other pros may be able to give a better overall review/comparison to other ligatures - but for the bread and butter stuff this is doing great for me, for 9 years!
PS: I got both light and dark versions and i prefer the Light - i think this is pure preference but that is the case for me, slightly more open sound, which i like in jazz. And I use them on my soprano as well, though smaller naturally.