I know a few bigger lads who bought this one when everything started hitting the fan last year.
SIHOO Ergonomic Home Office Chair Adjustable Lumbar Support 3D Armrests Skin-Friendly Mesh Desk Chair High Back(Black) https://www.amazon.co.uk/dp/B07GN4H96T/ref=cm_sw_r_apan_glt_fabc_3PX9S6H9QVM8ZY5YNCBZ?psc=1
Very comfortable and holding up well apparently, albeit a bit pricy.
Sorry to hear about the back pain, I was having similar issues with an IKEA £100 chair. The mesh back was good for me but the cushion bottom flattened out. I decided to look for mesh on both after watching reviews of different chairs (same view on the gaming chairs) and I didn’t want to spend a ridiculous amount. Decided to test this out and can agree with the reviews so far, all good and fully adjustable! However I’m 5ft6 so worth reading the reviews to see how it supports taller people like yourself! SIHOO Ergonomic Home Office Chair Adjustable Lumbar Support 3D Armrests Computer Desk Chair Breathable Mesh Executive High Back Chair(Black) https://www.amazon.co.uk/dp/B07GN4H96T/ref=cm_sw_r_cp_api_glt_fabc_8G214HP5450EB3GM8HH0?_encoding=UTF8&psc=1
Having purchased the Autonomous SmartDesk 2 and loving it, I am also needing to complete my WFH setup with a proper ergonomic office chair but didn’t want to wait 2 months for the Ergo 2. I came across the well reviewed and very similar SIHOO M57 on AmazonSIHOO M57 on Amazon. Says it will take 3-4 weeks but reviewers are reporting it actually arrives in 5 days as they have a shipping warehouse in the U.K.
Thanks, I've found THE ONE!
https://www.amazon.fr/dp/B07GN4H96T/ref=cm_sw_r_cp_apa_fabt1_LOPTFbPA20GD0?_encoding=UTF8&psc=1
What do you think about this one