I have this 11-46 sunrace cassette below and a mid cage 11 speed XT mech. Both are in very good condition. The two for £70? Can do pics of the mech later.
The sunrace cassette is about 30g heavier than the XT but the main reason for this is more evenly spaced gearing. The step to the lowest gear on XT is 37 to 46, but on sunrace is 40 to 46. Doesn't sound much but i find the steps on sunrace much smoother.