Combo vac-mop robots save time on hard floors but cost more than separates

The trade-off is straightforward: a combo robot handles both vacuuming and mopping in one pass, saving time on hard floors. But vacuum-only robots tend to have better suction and longer battery life because all their engineering goes into one job. Combo units also cost more and their mopping is typically a light damp wipe rather than a deep scrub. If your home is mostly hard floors and you hate manual mopping, a combo makes sense. If you have carpet or want max cleaning performance, consider separate units.