I'd say ally is pretty marginal on cogs under 20t or so, especially if your rings are small...
If you want this cassette to last, change your chain early and don't shift hard under under load.
I have a billet cassette that's half ally, half ti which is a bit more sensible, at least for the bargain sale price I scored it for... Ridden it a fair bit, still waiting to break a tooth.
BTW, if you're rocking fancy stuff like this, where are your straight-pull hubs?
I've used alloy cassettes since the 90s in previous WW quests so am well aqauinted with super smooth shifts when it comes to delicate parts like these, I'm pretty careful across all my bikes with regards to shifting, certainly not a smasher. My Park Tool chain checker is never far from my bikes and often used.
Regarding the hubs, the wheels were an unplanned WW mini project, they came up at a price I couldn't turn down and are basically unused and so light and like I said was also built with a budget in mind. The Bitex RAF10/RAR9 ultralight hubs are known to me as I have the non ultralight version (steel freehub) on a gravel wheelset and they are bombproof.
For £300(!) all in I have a very light wheelset that you'd have to spend at least £1400 on (ZED??) and a cassette that shifts as good as the DA9100 it replaced. This wheelset will perhaps get 10% use compared to my main wheelset so I expect the cassette to have a pretty long life.
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