Should I buy the Shark Matrix Self-Empty or Roomba i4+ Evo?

Short answer: If you want lower ongoing costs and a bagless self-empty base, lean Shark Matrix Self-Empty. If you care more about iRobot’s dirt-focused cleaning features and the sealed bagged Clean Base, lean Roomba i4+ Evo.

Pick the Shark Matrix Self-Empty if you want:

• A bagless self-empty dock — you empty the base yourself, so you don’t need to keep buying dock bags.
• Lower ongoing consumable costs — fewer replacement parts to worry about over time.
• Strong whole-room coverage — Shark’s Matrix-style cleaning is aimed at more methodical cleaning passes.

Pick the Roomba i4+ Evo if you want:

• iRobot’s dirt-handling behavior — it can spend extra time on messier areas.
• A sealed dirt-disposal system — the Clean Base uses disposable bags, which can be nice for dust control.
• iRobot’s dual rubber-roller setup — a good fit if you deal with hair and tangles.

My take

• Choose Shark for the better long-term value and less hassle with consumables.
• Choose Roomba if you prefer iRobot’s dirt-handling approach and don’t mind buying bags.

If you’re split, I’d usually give the edge to Shark for the lower running cost. Exact features can vary by bundle or region, so it’s worth double-checking the listing for the specific version you’re buying.