Between the TK860i and UHD35STx, the TK860i comes out ahead in several specs, while the UHD35STx wins on brightness and short-throw. Overall, the TK860i scores 84.6 and the UHD35STx scores 89.1 on our Mars Score.
Which should you buy?
The UHD35STx edges ahead on the Mars Score (84.6 vs 89.1), but the 4.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The TK860i 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 UHD35STx if you care most about brightness and short-throw. Its strongest claims are brightness, short-throw.
Both ship with comparable resolution, light source, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why BenQ - TK860i wins
- No decisive advantages.
Why Optoma - UHD35STx wins
- ▲Brightness — 9.09% more. 3600 lm vs 3300 lm.
- ▲Short-throw: true (vs false).
Spec comparison
Image
| Spec | BenQ - TK860i | Optoma - UHD35STx |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightness | 3300 lm | 3600 lmlead |
| Contrast | 600000:1 | 1000000:1 |
| Light source | Lamp | Lamp |
| Short-throw | false | truelead |
Smart & Connectivity
| Spec | BenQ - TK860i | Optoma - UHD35STx |
|---|---|---|
| Smart OS | Android TV | None |
| HDMI inputs | 2 | 2 |
| Built-in speakers | true | true |
Frequently asked
Spec-level deep dives
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