What kind of listening chair

Should your critical listening chair be high-back, low-back, or a stool?  Wood, leather, or fabric?
Important to have the optimal ear height to suit your speakers.
Low back below ear level.
I use a milk crate. 
I started with a high back Steelcase Gesture chair $1,200. Amazing armrests, and comfy.But then I was in Office Depot one day and tried a few. When I sat in the Serta Smartlayers office chair...Wow. Bought it for less than $300.I'm 5'7"tall. It's a bit tall for us short guys, so one day I stuck a block offoam I have from tearing down an old mattress. It's big, maybe 12" thick, by 15X20". Like a footstool, but WAY better. Greatest mistake I ever made. With your knees bent, and stocking feet on the edge, you canbounce your feet to the music. It's amazing.Then to prove just how weird I am I sat and considered..."Hmm how can I make this even more comfortable. I realized that subconsciously I was holding my knees together with muscles, instead of relaxing. So I found a flexible strap (like a big wide rubber band made of fabric), put it around my knees. Bingo! Then I removed the armrests, put a down pillow on mylap (which also holds the remotes), and I gotta say, everyone laughed at
me at first, until they sat in it.  Give it a try, and too you will realized how total body relaxation can improve the listening experience.
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