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Appliances head-to-head

iRobot Roomba Combo j9+vsShark Matrix Plus 2-in-1

Same ballpark on the average, 7.5 and 7.5, and nothing alike on the axes: Shark Matrix Plus 2-in-1 wins Value by 2.6, 8.8 to 6.2.

iRobot Roomba Combo j9+

iRobot

7.5

Refills its own mop water for weeks at a time. The base that manages it is the loudest here.

Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.

Shark Matrix Plus 2-in-1

Shark

7.5

A base with no bags to buy, and a mop pad that is still a job you do entirely by hand.

Price and availability change constantly, so we don't quote them here — the link opens the current Amazon listing.

Where they diverge

The widest gap is Value, Shark Matrix Plus 2-in-1 ahead 8.8 to 6.2. They come closest on Durability, 8.5 to 8.0. Left of center is iRobot Roomba Combo j9+, right is Shark Matrix Plus 2-in-1.

iRobot Roomba Combo j9+ versus Shark Matrix Plus 2-in-1 — axis scores out of 10Horizontal bar chart of editorial scores out of 10 across 5 axes. Bars for iRobot Roomba Combo j9+ run left from the axis labels, bars for Shark Matrix Plus 2-in-1 run right. iRobot Roomba Combo j9+: Performance 8.4, Value 6.2, Durability 8.5, Ease of use 8.8, Quietness 5.6. Shark Matrix Plus 2-in-1: Performance 7.6, Value 8.8, Durability 8.0, Ease of use 6.8, Quietness 6.2.iRobot Roomba Combo j9+ (left)Shark Matrix Plus 2-in-1 (right)PerformanceiRobot Roomba Combo j9+ — Performance 8.4 out of 108.4Shark Matrix Plus 2-in-1 — Performance 7.6 out of 107.6ValueiRobot Roomba Combo j9+ — Value 6.2 out of 106.2Shark Matrix Plus 2-in-1 — Value 8.8 out of 108.8DurabilityiRobot Roomba Combo j9+ — Durability 8.5 out of 108.5Shark Matrix Plus 2-in-1 — Durability 8.0 out of 108.0Ease of useiRobot Roomba Combo j9+ — Ease of use 8.8 out of 108.8Shark Matrix Plus 2-in-1 — Ease of use 6.8 out of 106.8QuietnessiRobot Roomba Combo j9+ — Quietness 5.6 out of 105.6Shark Matrix Plus 2-in-1 — Quietness 6.2 out of 106.2Editorial score out of 10 — higher is better

Which one to pick

Take the iRobot Roomba Combo j9+

Leads on Performance, Durability and Ease of use.

  • A repair should mean a phone call and a local parts number, not a shipping label
  • Carpet and hard floor in the same room, cleaned in a single pass
  • You will not remember to refill a water tank, so the dock should do it

Take the Shark Matrix Plus 2-in-1

Leads on Value and Quietness.

  • Long hair is the reason your current vacuum needs rescuing every week
  • You would rather never buy a replacement dock bag again
  • A US warranty and parts you can find without importing them

What each one gets wrong

iRobot Roomba Combo j9+

  • Anyone sleeps within earshot of where the base has to live
  • You are comparing suction figures, because there is no pascal number to compare
  • Rooms get cleaned with the blinds down and the lights off

Shark Matrix Plus 2-in-1

  • You wanted mopping to be automatic, because here it is not
  • The dock will live somewhere quiet hours matter
  • Cleaning has to finish quickly, since the grid passes take their time

Specs, side by side

SpeciRobot Roomba Combo j9+Shark Matrix Plus 2-in-1
MoppingArm retracts the pad onto the robot's roofSonic pad, 100 scrubs per minute
BaseEmpties for 60 days, refills water for 30Bagless self-empty, 60-day capacity
Obstacle avoidancePrecisionVision camera navigation—
ScrubbingSmartScrub back-and-forth passes—
Navigation—360° LiDAR mapping
Brushroll—Self-cleaning, hair does not wrap

Rankings they both appear in

Questions

They average the same number. What breaks the tie?
Value does, at 8.8 against 6.2. That axis covers what the same money buys elsewhere. iRobot Roomba Combo j9+ leads on Performance, Durability and Ease of use. If Value and Quietness matter more to you, take the Shark Matrix Plus 2-in-1 instead.
Why are the totals this close?
The total is the plain average of the 5 Appliances axes, so opposite results cancel. Both average 7.5, while the individual axes run as far apart as 2.6.
Which one ranks higher in "Every self-emptying base sells you a consumable"?
iRobot Roomba Combo j9+ sits at #1 in "Every self-emptying base sells you a consumable", Shark Matrix Plus 2-in-1 at #2.