Colamy Atlas vs Aerix

Hey everyone,
I’m looking to buy a new chair soon and could use some advice. I’m in Europe and have been waiting for some discounts. Right now, Colamy is running a fall sale: the Atlas is 20% off (320€), and the Aerix is 25% off (300€).

I’ve heard a lot about the Atlas, but I can’t seem to find any reviews for the Aerix. Does anyone here have experience with it? Also, if you know of any other good alternatives in this price range, I’d love to hear your recommendations.

Thanks in advance!