Big-and-tall comfort or lighter ergonomic precision: which chair wins?

Display

There is no display or screen involved here, so this category does not apply. For chair shopping, the practical equivalent is how well the chair supports screen use over long sessions. On that basis, the SIHOO M59AS has the edge because its dual back design and adaptive dynamic lumbar support are built to keep your spine aligned while you work at a monitor. Winner: Product B.

Performance

For a chair, performance means how well it supports you through a full workday without pressure points, slouching, or fatigue. The Efomao wins on pure comfort and load handling: its 200kg weight capacity, thick padding, high back, and built-in footrest make it better suited to larger users or anyone who likes to recline deeply while reading, taking calls, or watching content. The SIHOO M59AS performs better for active desk work because the adaptive lumbar and dual back design are designed to move with you, which usually means better posture over long typing sessions. If your priority is lounging, Efomao wins. If your priority is all-day working posture, SIHOO wins. Overall winner: Product B for work performance, Product A for relaxation performance.

Build quality and design

The Efomao feels like the more substantial, executive-style product. Its big-and-tall framing, heavier-duty construction, and fabric upholstery are clearly aimed at durability and comfort under higher loads, and the 200kg rating is a major confidence point. The SIHOO M59AS looks more like a modern task chair: lighter, more compact, and more focused on ergonomic engineering than plushness. Its 3D coordinated flip-up armrests are a strong design advantage for users who need to tuck the chair under a desk or move their arms freely, and the dual back concept suggests a more sophisticated support structure. If you want the chair that looks and feels more like a throne, Efomao wins. If you want the chair that is more refined and purpose-built for desk work, SIHOO wins. Winner: Product A for heavy-duty build, Product B for ergonomic design.

Battery life

Neither chair is powered, so there is no battery life to compare. In real-world terms, the question becomes maintenance and long-term usability. The SIHOO’s simpler task-chair layout is likely to be easier to live with in a standard home office, while the Efomao’s extra cushioning and footrest add more moving parts and more bulk, but also more comfort features. No winner here: tie.

Price and value for money

At £248.98, the Efomao is £79.03 more expensive than the SIHOO M59AS at £169.95. That premium buys you a much higher 200kg weight capacity, thicker padding, a footrest, and a more lounge-like executive experience. However, the SIHOO’s lower price is easier to justify for most office users, especially because it still includes useful ergonomic features such as 3D coordinated flip-up armrests and adaptive dynamic lumbar support. If you need the big-and-tall spec, the Efomao can justify its price. For most people, though, the SIHOO offers better value because it delivers the core ergonomic features at a noticeably lower cost. Winner: Product B.

Game library/features

This category does not apply directly to office chairs, but the chair equivalent is feature set. The Efomao’s standout extras are the footrest, thick padding, reclining home-office focus, and high-back executive format. The SIHOO counters with more practical everyday features: 3D coordinated flip-up armrests and adaptive dynamic lumbar support are the kind of details that matter when you’re typing, mousing, or switching between tasks. If you want comfort extras, Efomao wins. If you want adjustability that improves desk use, SIHOO wins. Winner: Product B.

Overall user experience

The Efomao is the better chair for bigger users, heavier users, and anyone who prioritises plush comfort, recline, and a footrest over fine-tuned posture support. It is the more indulgent option, and the 200kg capacity is a major differentiator that many chairs simply cannot match. The SIHOO M59AS is the better all-round office chair for most buyers: it is cheaper, more ergonomic, more compact, and better aligned with the realities of sitting upright at a desk for long periods. Its dual back design and adaptive lumbar support are especially appealing if you get lower-back fatigue from traditional executive chairs. Overall summary: choose Efomao if you want maximum comfort and big-and-tall support; choose SIHOO if you want the better desk chair for actual work. The clear winner for most people is the SIHOO M59AS because it offers stronger ergonomic value at a much lower price, but the Efomao is the better specialist choice for larger users and relaxation-heavy use.