Stool \ Chair \ Swinging on a tire, what's the most confortable to play on?

[Mantrox]

Even though i wanted to buy some stools for my cabs, i ended up never going for it because i was worried about long sessions not being that great without back support.

For example this past weekend i played 100 matches of SFV in a row, and that was like 4-5 hours.
Have you played for several hours on stools?
Do you prefer another specific type of chair?
What's you're experience?

[cools]

I'm comfortable on the 48cm stools for hours.

[radiantsvgun]

Stools are alright for general use. When I have a heavy session, like practice STG, I use an office chair.

[Tealsnk]

Office chair user here also for very long play sessions, but stools work fine for short sessions.