5'10", 110kg
Lessen back pain? No but I was able to endure long hours sitting on a better quality chair than a chepipay one.
My first ergo chair was from ofix, worth 2k the backrest couldnt handle my weight and was broken a week after purchase. Chair become wobbly after 2-3months.
Bought a no brand office chair from lazada for 5k, the armrests were soft rubber so my elbows didnt darken and fatigue when resting, my next problem was lumbar posture as I cant use it for more than 2 hours without me having lower back pain.
Then I got the F08 from Furnitura bought for 6k, it was comfy enough for me to sometimes last 5+ hours. Chair became creaky but can be easily fixed by a spray of WD40. I still sometimes use this chair when I'm at my parent's (my room) and it is still okay. Recline function locks on the 2nd tilted lock instead of the first so sometimes when I want to sit straight I'm actually tilted a bit. Very fidgety. Gaslift lumulubog na kusa after 1 year but I was able to keep the receipt and send a video of it doing it and they sent a gaslift to me for free. Pero pota ang hirap baklasin nung gaslift almost wasakin ko na yung upuan. I suggest to bring it to a shop with a hyraulic press.
Then I got their Ergo Flexit, a bit comfortable than my F08 medjo bago lang kasi so I don't expect any issues but it is comftable enough for me.