Combination or key TSA lock — which is better?

Reviewer opinion is split. Threads on r/BuyItForLife and r/Flights favor combination locks because there is no key to lose, while r/onebag commenters point out that cheap combination dials can be decoded or shimmed and prefer dimple-key designs like the Forge key locks. If you travel frequently with multiple bags, a key set where one key opens all locks (a feature highlighted in Walmart reviews of the Forge dimple-key pack) is the most convenient compromise.