Chairs for a Taller Person?

Hey everyone. Like most people, I've been spending a lot more time at home, and with online school & a lot of gaming going on, I'm looking for a chair that I could spend at least 8 hours a day in comfortably.

I'm 6'1" and hover around 170-180, with average leg & torso length, but I have pretty persistent lower back pain that's spreading to my neck, shoulders & upper back.

I've been looking at chairs in the 500-600 CAD range, but I'm willing to go closer to $1000 if the chair is worth it.