Owner of the chair for about 3 months so I have the following to say:

Positives: good quality Mesh, generally I don't see it wearing out easily. It is fully adjustable (excessively in some areas) and quite comfortable.

Negatives: the biggest problem for me is the lumbar support, for me it is a bit high and it is not adjustable, resulting in it being annoying instead of relaxing me

My second gaming chair but my first with mesh upholstery. One of the most comfortable chairs I have tried. I wouldn't recommend the X-AIR Pro XL since the differences are minor and not worth the extra money. The quality of Anda Seat is the only way to go in this category at this price and generally for gaming chairs.

for work it is okay.
the build material is very good but for its price I would expect more settings.

Unfortunately, this is what happens when you try something only once. I bought it for 299 and I have to say I am completely disappointed. It does not support a 90-degree position, which is the correct one for working at a desk, and generally, no matter how many hours you sit or whatever you do, you should be at 90 degrees. The tilt is much greater, making it ideal for movies. The lumbar pillow is very hard and not comfortable after an hour. The seat towards the back has a huge gap, resulting in not sitting properly in the chair, and overall, for its price, it should have these adjustments. Prefer to get the pro, which at least has seat adjustment, because the mega is a waste of money. I have already put it on the marketplace. If anyone wants to buy it from me, I have had it for only two days.

Excellent chair, very comfortable - even if you sit for MANY hours, you won't feel any discomfort. Very high-quality and thick real perforated mesh that breathes perfectly.
Compared to other mesh chairs I've had over the years (much cheaper ones), there is simply no comparison.
Get a more expensive one so you don't have to change chairs every year.
As for the headrest, I think I've only felt like I've used it a few times - if there was an option to adjust it forward and backward, it would be ideal.

Easy to assemble. Very comfortable and convenient for a person with a height of 180 cm and a weight of 100 kg. Several adjustments so you can find the right position for you.

Great chair. First time with mesh. Very comfortable for what it is. Many adjustment positions, silent. Very high-quality construction. Breathes perfectly, I never sweat, and I used to have a huge problem with leather chairs. For 300 euros you don't want anything else. For me, it's worth more than the Pro. The 100 euro difference they have is a lot and essentially it's the same chair. We'll see now how long it lasts over time, I always sit in sweatpants. Overall, amazing and very high quality, worth its money 100/100.

Very good chair for gaming and not only that. Comfortable seat with adjustments for the backrest and headrest in several positions. The perforated fabric on the back and seat is very convenient and does not make you sweat, ideal for the summer months or if you sit for hours at the PC.
A major drawback for a chair at this price is that although it has many positions for the headrest, it does not lock in place, resulting in it being very uncomfortable for the neck.

The chair is truly wonderful!
I just think it's a bit overpriced considering that the seat and back are just a mesh (of very good quality).