Quick takeaway
iRobot Roomba s9 Plus and Maytag MDB8959SKZ PowerBlast are very close in this matchup. When the overall score is tied, the right choice usually comes down to price, review depth, and which spec wins matter most for your use case.
iRobot Roomba s9 Plus vs Maytag MDB8959SKZ PowerBlast
Choose iRobot Roomba s9 Plus if...
Pick iRobot Roomba s9 Plus if its current price, brand, or design fits your shortlist better than Maytag MDB8959SKZ PowerBlast.
Choose Maytag MDB8959SKZ PowerBlast if...
Pick Maytag MDB8959SKZ PowerBlast if its current price, brand, or design fits your shortlist better than iRobot Roomba s9 Plus. It currently costs about $549.01 more, so make sure those wins matter to you.
Side-by-side specs
This is the raw comparison view. It is there for the rows that actually decide the purchase, not just the headline winner badge.
Performance
| Spec | iRobot Roomba s9 Plus | Maytag MDB8959SKZ PowerBlast |
|---|---|---|
| Noise Level | - | 46 dBA (quiet) |
| Suction | 40x (strongest in Roomba line) | - |
Battery and power
| Spec | iRobot Roomba s9 Plus | Maytag MDB8959SKZ PowerBlast |
|---|---|---|
| Battery Life | Up to 120 min | - |
Dimensions
| Spec | iRobot Roomba s9 Plus | Maytag MDB8959SKZ PowerBlast |
|---|---|---|
| Dustbin | 0.5 L | - |
| Width | - | 24-inch |
General
| Spec | iRobot Roomba s9 Plus | Maytag MDB8959SKZ PowerBlast |
|---|---|---|
| Brand | iRobot | Maytag |
| Capacity | - | 14 place settings |
| Category | Vacuum cleaner | Dishwasher |
| Model Number | - | MDB8959SKZ |
| Type | Robot vacuum | Built-in |
The verdict
Based on 18 spec comparisons plus user ratings, both products are closely matched, so price and feature priorities should drive the final choice.
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Comparison FAQ
These answers explain how the score is built, when the lower-scoring option still makes sense, and what to confirm before you buy.
What is the iRobot Roomba s9 Plus vs Maytag MDB8959SKZ PowerBlast score measuring?
VSFinder compares 18 visible spec rows, then blends those wins with current price and Amazon rating signals so the page reflects both raw specs and real shopping context.
When does the lower-scoring option still make sense?
When the score is close, the lower-scoring option can still be the better buy if it wins on the features you care about most or lands at a meaningfully lower price.
What should I confirm before I buy?
Confirm the live Amazon listing for price and availability, then double-check the few spec rows that matter most to your use case. We currently track $299.99 for iRobot Roomba s9 Plus and $849.00 for Maytag MDB8959SKZ PowerBlast.