Between the EcoTank ET-2850 and OfficeJet Pro 9135e, the EcoTank ET-2850 comes out ahead in several specs, while the OfficeJet Pro 9135e wins on pages/min (color) and pages/min (mono). Overall, the EcoTank ET-2850 scores 43.5 and the OfficeJet Pro 9135e scores 57.1 on our Mars Score.
Which should you buy?
The OfficeJet Pro 9135e is the clear pick on raw spec strength, leading by 13.6 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The EcoTank ET-2850 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the OfficeJet Pro 9135e if you care most about pages/min (color) and pages/min (mono). Its strongest claims are pages/min (color), pages/min (mono), adf.
Both ship with comparable type, color, auto duplex, so those specs don't separate the two — focus on the differences below.
Bottom line: the OfficeJet Pro 9135e is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Epson - EcoTank ET-2850 wins
- No decisive advantages.
Why HP - OfficeJet Pro 9135e wins
- ▲Pages/min (color) — 260.00% more. 18 vs 5.
- ▲Pages/min (mono) — 109.52% more. 22 vs 10.5.
- ▲Has ADF.
Spec comparison
Spec
| Spec | Epson - EcoTank ET-2850 | HP - OfficeJet Pro 9135e |
|---|---|---|
| Type | Inkjet AIO | Inkjet AIO |
| Color | true | true |
| Pages/min (mono) | 10.5 | 22lead |
| Pages/min (color) | 5 | 18lead |
| Resolution | 5760x1440 dpi | 4800x1200 dpi |
| Max paper size | Letter | Letter |
Features
| Spec | Epson - EcoTank ET-2850 | HP - OfficeJet Pro 9135e |
|---|---|---|
| Auto duplex | true | true |
| ADF | false | truelead |
| Wi-Fi | true | true |
| AirPrint | true | true |
Frequently asked
Spec-level deep dives
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