How much should a 3-piece hardside luggage set weigh?

Reviewers generally treat under 10 lb for the carry-on and under 12 lb for the largest checked bag as the lightweight benchmark. The LEVEL8 Grace and Coolife sets in this roundup both come in around 9–10 lb for the carry-on, which leaves usable airline-weight headroom. Anything over 11 lb for a carry-on eats into your 22 lb or 50 lb allowance fast.