Best office chair for working from home?

[Wainuiguy]

Hi Guys, 

What is your view on work from home setups? I'm spending less and less time at the office these days, opting for work from home. 

Problem is, I don't have the same kind of setup I had in the office. (Comfortable) 

There a couple of options with these guys (Desks and Chairs etc) Agile Office Furniture I've come across but it they can be pricey, so I want to be sure about what I'm buying before I go ahead with something. 
Your insight is appreciated! 

I bought a decent office chair to WFH - was about $400 or so and was good - until I was sitting in it day after day.  Then the back issues started.   So changed to a gamers chair from Secret Labs.  Very comfortable, adjustable, supportive.  No back issues since I have had it.

www.secretlab.co.nz  

 Looks like they have up to $150 off at the moment.