I have sit on the ErgoChair Pro (https://www.autonomous.ai/p/ergochair-pro) from Autonomous for years now and it is truly worth investing. The best thing I love about the chair is the lumbar support and its recline. TBH, Very comfortable, a total back save and complete game changer. Have seen on Twitter where lots of influencers talked about it which made me so FOMO. So I had to make a purchase during Christmas and got it good deals too. No words to describe it, I highly recommend you check out their website.