I can't speak to these road cassettes, but I bought a wide range MTB cassette specifically for the weight, and it skips in the smallest cogs. They keep offering to replace it, but at some point, what's the point? I also broke a tooth off the largest recently.

Ztto 9-50t...no problems....only mistery o had to sort out was afterr changing it to my new fiberin carbon wheels. The cassete was never fully thightened even with the correct torque so i had To include a spacer( which was not suposedly needed as my driver is XD not XDR.

I actually had mine come undone as well. I now have it loctited , hopefully that will take care of it.

I've finished assembling mine, and I wanted to leave some thoughts for people who are thinking about getting this frame.

1: The need to have the BB threads chased is real. The provided BB worked fine for me, but not with my 30mm spindle, and the bsa30 BB I was going to use worked fine for the left side, but I ended up cross threading the drive side cup. I was lucky enough to get it mounted and square in the end, but it is now a permanent fixture of the frame and I will just replace the bearings only when the time comes.

2: The description for the white frame states that a chainring up to 40t can be used. There is just no way this is going to happen (unless the white frame is different somehow). A 38t for sure will not fit, a 36 might, but it would be awfully close. I think 34T is the realistic max chainring this frame will allow.

3: I am 5'10" on a good day, normally proportioned, and I find the frame fairly small (reach). I have back issues, and I like to be more stretched out. I could have easily fit a larger size. (i'm using a 70mm stem, and 0 offset seatpost)

Overall, I'm happy. I'm took a chance on a chinese derailleur and I suspect I'll quickly get something more reputable. Weight is a hair under 21lbs. (I am a hair over 20lbs overweight...)

He told me there's only one (superlight) version.

I asked yesterday. He stated 1800g+-30g for a size large.

I actually decided against it, and go with the lexon riot.

Are those the original Lezyne mounts? This alloy one; which one is it? Can you share a link possibly?
I have the O ring mount types which come in the box together with with the computer and the forward mount composite ones; 5 in total. On all of them the diagonal part which serves as a spring to keep the cmputer tightly is broken.

Right on the lezyne page:

https://ride.lezyne.com/products/alloy-cnc-forward-mount

Surely someone is ready to upgrade to something else?