I originally got the Hyken but is was a little too narrow and short for me. I am 5'10" 220. I returned it and got the Dexley instead. So far it has been much more comfortable. If you are around my size I would try the chairs out in store for like 20minutes or just go with the bigger Dexley.
I had a heavily padded chair from Staples for about 18 months. It became uncomfortable and tilted on the pedestal so I used the extended warranty and got this. I have a fairly minor lordosis and never understood why I never liked lumbar support. Because it usually just provides more or less of a bump amplitude that's why. This chair lets you slide it up or down (but not change the amplitude). I found that at the lowest level it actually feels good! The headrest is a little forward of where I prefer it but it too slides up and down (but not fore or aft). I find that I don't perspire as much when I sit in this for a long time. It is quite firm but also very comfortable. I don't know if it's for everyone but it's about the 5th or 6th office chair I have owned and it seems to be the most comfortable. Also: The seat doesn't tilt but the back can (you can allow or disallow it by sliding the lift rod). That's a good thing because most chairs will cut off some circulation when you have them adjusted to a good height unless you put your feet up on something when you tilt the seat and back.
I am 6’3” 260lbs. It was extremely difficult to find a mesh chair that has both wide and deep enough seat. This one accomplishes both and is comfortable.