I have not tried win8 yet, most likely will soon.
Currently I am running:
Toshiba Laptop running
Win7 (Originally a Vista machine)
Asus 10" Netbook running
WinXP & Linux Joli 2.0
Asus 7" Netbook 4GB running
Linux Wattos (excellant due to it's small footprint in a small 4GB drive)
Compaq Presario 1200 Laptop (12 year old) running
Linux can't remember the breed (off USB key as i can't install on hardrive)
eMachines PC running
Win7
HP Pavilion 514a (10 year old) running
Win7, Linux Joli 2.0 & Linux Zorin (so far my fav linux)
& another PC (Pryon) running
WinXP
Linux MintI have tried along with many others, I do like it but currently not using.