Chair suggestions

[Anjelllo]

I'm looking at buying a computer office chair in the next day or two, and I'm kind of lost. I went to a couple office suppliers near me and they just had the cheap stuff or knock-offs.
My budgets is under $500 and I'm hoping to buy something that will get rid of this bad pain I have with my current chair after using it for hours wfh.
I was thinking of buying the Herman Miller Celle, as I tried one at the office and liked it, but I've heard bad things about it online so I feel like I just don't have anything else impressive to compare it to, Either that or it just fits me personally well. 

I tried out the aeron B, and I didn't really like it even after I adjusted the lumbar, but I also didn't touch the other settings. not a huge fan of the cheaper herman millers' either.

 

Two things:
I'm tall, 6'3, under 200 lbs
 

I can get the Celle refurbished for $360 from a local supplier, and am thinking I'll pull the trigger, but would like to hear other opinions before I purchase because I'm an indecisive person  .