Anti-tangle brushroll or self-cleaning brushroll — what's the difference for long pet hair?

Anti-tangle (or tangle-free) brushrolls use a fin or comb geometry that resists hair wrap in the first place; self-cleaning brushrolls actively strip hair off as you vacuum. For households with long-haired dogs or multiple cats, specialist reviewers tend to favor the self-cleaning DuoClean/PowerFins setups on higher-end Shark models, while Bissell's tangle-free designs are the more common budget-tier solution.