M8 Slim 9cm Robot Vacuum vs S8 MaxV Ultra
Side-by-side comparison of M8 Slim 9cm Robot Vacuum (Nanjing Zhengfeng Foreign Trade Services Co., Ltd.) and S8 MaxV Ultra (Roborock) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Cleaning & Facilities buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- M8 Slim 9cm Robot VacuumChina
- S8 MaxV UltraChina
Year First Available
- M8 Slim 9cm Robot Vacuum2026
- S8 MaxV Ultra2024
Verified Deployments
- M8 Slim 9cm Robot Vacuum0 Deployments
- S8 MaxV Ultra0 Deployments
Layer 2: Operational
Price
- M8 Slim 9cm Robot Vacuum$172 USD
- S8 MaxV Ultra$800 USD
Battery / Shift Runtime
- M8 Slim 9cm Robot Vacuum2.5 hrs
- S8 MaxV Ultra—
Availability Status
- M8 Slim 9cm Robot VacuumACTIVE
- S8 MaxV UltraACTIVE
Layer 3: Category Specific
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | China | China |
| Year First Available (values differ) | 2026 | 2024 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | $172 USD | $800 USD |
| Battery / Shift Runtime (priority for Cleaning & Facilities buyers) (values differ) | 2.5 hrs | — |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Payload Capacity, Reach, Max Speed, IP Rating, Autonomy Level
ROI Comparison
Same operating assumptions across every robot — the only difference is price. Set your numbers once to see which pays back fastest.
Annual labor displaced (per robot): $50,000
| Metric | M8 Slim 9cm Robot Vacuum | S8 MaxV Ultra |
|---|---|---|
| Investment | $172 | $800 |
| Payback period | < 1 mo | < 1 mo |
| Net savings (5 yr) | $249,828 | $249,200 |
| ROI (5 yr) | +145249% | +31150% |
Estimates labor-cost displacement only — not a full total cost of ownership. Actual ROI depends on integration, maintenance, training, downtime, and task fit. Converted currencies are indicative; USD is the price of record.
Trade-offs at a glance
Frequently asked
Who makes M8 Slim 9cm Robot Vacuum and S8 MaxV Ultra?
M8 Slim 9cm Robot Vacuum is made by Nanjing Zhengfeng Foreign Trade Services Co., Ltd., based in CN. S8 MaxV Ultra is made by Roborock, based in CN.
When were M8 Slim 9cm Robot Vacuum and S8 MaxV Ultra launched?
M8 Slim 9cm Robot Vacuum launched in 2026. S8 MaxV Ultra launched in 2024.
How much does M8 Slim 9cm Robot Vacuum cost compared to S8 MaxV Ultra?
M8 Slim 9cm Robot Vacuum is listed at $172. S8 MaxV Ultra is listed at $800.
How do M8 Slim 9cm Robot Vacuum and S8 MaxV Ultra compare on the Robo Index?
M8 Slim 9cm Robot Vacuum grades AA on the Robo Index. S8 MaxV Ultra grades A. The Robo Index is a credibility grade (AAA … C) that blends commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.
Are M8 Slim 9cm Robot Vacuum and S8 MaxV Ultra in the same category?
Both robots are classified as Home Cleaning on Robolist. Filters and ranking treat them as direct alternatives.
What should a buyer ask vendors when choosing between M8 Slim 9cm Robot Vacuum and S8 MaxV Ultra?
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: The hidden specs vendors hope you'll miss.
Want to be notified when specs or pricing change for these robots? Drop your email.
Other comparisons
About this comparison
M8 Slim 9cm Robot Vacuum vs S8 MaxV Ultra compares two robots in the home-cleaning category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robo Index is calculated.