While both BenQ projectors deliver stunning Native 4K resolution at 3200 lumens, their core value propositions diverge significantly. The BenQ TK710, with its laser light source, positions itself as a versatile entertainment hub, excelling particularly for gamers. Its standout feature is the ultra-low input lag: a mere 4ms when playing at 1080p/240Hz, or a respectable 16ms at Native 4K/60Hz. This responsiveness translates directly into a smoother, more competitive gaming experience that the BenQ W4100i, which lacks explicit gaming-centric input lag specifications, cannot match. Furthermore, the TK710 comes in at a more accessible $1998, making it a compelling choice for those seeking high-performance 4K projection without the premium price tag.

On the other hand, the BenQ W4100i, priced at $2799, is a dedicated home theater projector for the discerning cinephile. Its LED light source, while also long-lasting, is paired with a critical advantage in color reproduction: 100% DCI-P3 color gamut coverage. This wide color space, combined with factory calibration and HDR10+ support, ensures cinematic content is displayed with breathtaking accuracy and vibrancy, making movie nights truly immersive. The W4100i also boasts a more flexible 4-way lens shift, offering greater ease during installation compared to the TK710's vertical-only adjustment, which is beneficial for dedicated home cinema setups where precise placement is paramount.

In real-world use, the TK710 feels like a dynamic, all-rounder projector perfectly suited for a living room where both blockbuster movies and high-octane gaming sessions occur. Its brighter laser output and excellent gaming performance provide a balanced experience. Conversely, the W4100i provides a more refined, cinematic feel, where every frame of a film is rendered with meticulous color fidelity. The integrated Android TV, complete with Netflix, adds convenience, transforming it into a self-contained smart home theater system. The trade-off for the W4100i's superior color and smart features is its higher cost and absence of optimized gaming performance. Ultimately, buyers must weigh their primary use case: competitive gaming and value or unparalleled cinematic color accuracy and integrated smarts.