Extremely comfortable chair to sit in. The ergonomic options are many, more than what you would expect for this price range. Initial building of the chair went smoothly, instructions are very clear and they really did their best to minimize it. What a value for the price.

This Libernovo Omni SE chair is absolutely incredible and worth every cent. Though I have to say, it's a magnet for animal hair and all kinds of dust, and when you sweat, and you will sweat on this chair, the fabric will stick to your skin. That being said, I still cannot give it less than 5 stars because of how much I love it and here is why:

Bought it for 645 euros on the recent sale, coupled with the AHNESTLY50 coupon code, and as I said, IT IS WORTH EVERY CENT.
The headrest is by far the most comfortable one I've ever had the pleasure of using on my chair. In the sea of utterly dogcrap headrests, this one does the job perfectly, which unfortunately, even for this kind of money, is still very rare. It's adjustable in all the meaningful ways: vertically, longitudinally, and with tilt adjustment. Most of the chairs I've had have only tilt. And some of them were noticeably more expensive than this one, which felt like a slap in the face from the manufacturer.
The backrest is fantastic too. It adjusts slightly to your body when it moves, and it is also very plush. One caveat is that when you're fully reclined, you don't get quite as much support. It's a bit too narrow up top for my shoulders, so something like the Maxis backrest would probably be better.
The seat is as wide as it needs to be, as plush as it should be, and it has no bottoming-out issues. At 5'11", the 48 cm deep seat is perfect, leaving about 2-3 fingers of clearance from the back of my knees to the chair.
The armrests are very nice too, since they don't move very easily, the plastic isn't hard on your elbows, and overall I have no complaints there either.
This seat has all the recline positions mentioned by Libernovo (obviously lol), but the great thing here is how well thought-out and adjustable it is to each person's preferences.
I, for example, want it to recline no further than 135 degrees, and I want the tension for the recline to be high, so that when I'm at my desk I can lean back fully relaxed and it goes to only around 105 degrees. But when I push a little harder, it goes further, while still doing so with ease as soon as there's actual force put on it by your body.
The only notable minus could be build quality, which, after all I've said, might sound stupid, but yeah, the materials do not feel that premium. But if sacrificing some of that premium feel is what allowed them to hit this price, then hats off and we're all cool.
Worth noting that there were also no issues with shipping. Ordered on 3rd of september, shipped by 5th if I remember correctly and arrived on 8th.

Overall, great value chair and the best one I've had (by far).

Lovely chair. I enjoy working now.

Very comfortable and great quality