Chair or Sofa? Which do you use?


I am planning to set up a new listening room; approx. 13 x 20 w/carpeted floor. Do any of you see any advantages of one of these seating arrangements vs. the other?
gabbro
When not trying Naked Audio Tweaks, I searched for about one year till I found the most comfortable Non-Fatiguing listening chair. A leather Recliner made by a company called Calia their Monda model. It has a multitude of listening positions & looks really kewl with it's brushed aluminum accents!

http://www.caliamaddalena.it/onda.jpg
An Ikea chair. You know, the bouncy ones with the wooden frame? They kinda' rock and move with you as you move with the music. I hate a chair that won't move! They are also light and easily moved out of the sweet spot when you're entertaining.
Ikea offers a variety of fabric or leather coverings, although leather might be a little sticky for you nude guys.