Secretlab Titan Evo beats Steelcase Series 1 on lumbar adjustability with its 4-way L-ADAPT system and CloudSwap armrests per the grounded facts, while the Series 1 supports 400 lbs and costs $92 less at MSRP. The Titan Evo's 2021 release gives it newer features over the 2018 Series 1. This is a close call on value but Titan Evo wins for most users needing detailed ergonomics.