Listen...chair

+5 or wherever we are for the Ekornes Stressless. 

When only the best will do....
http://www.hermanmiller.com.au/products/seating/lounge-seating/eames-lounge-chair-and-ottoman.html

If it's got foam cushions in it like the IKEA chair I'm out.

I’ve been happy using Wassily Chairs my wife and I purchased back in the 1970s. And I would expect any effects they might have on sonics to be very minimal compared to most other kinds of chairs. Various knockoffs are available at much lower prices than the genuine article shown at the link.

Good luck. Regards,
-- Al

I recently replaced an old, overstuffed sofa with these Barcelona chairs. (we have similar tastes Al!) The improvements were noticeable and for the better since they don't dampen the room like the sofa did. Unless anyone thinks I paid that much for a couple of chairs and matching Ottomans, rest assured I researched long and hard to find the best reproductions at a fraction of the price. I've sat in a Knoll and some of the knock offs (which were awful) but the ones I have feel no different (and look great).

All the best,
Nonoise