My hand is up
I bought one (Samsung arm version). Did not like the spyware. Formatted it into Debian (it is possible to do that if you know what you are doing).
Did not like that either:
1. The disk is excruciatingly small. I got sick of constantly marking folders as "do not cache" so I could keep the disk space under control
2. The default touchpad mac-like-ishness is extremely annoying. As anyone who has spent the last 15 years pasting by simply hitting the middle button (or right and left together) this "luser-friendly" pseudo-apple design quickly got on my nerves (5-7 motions to cut-n-paste instead of 2).
3. The onboard qualcomm modem is very buggy. It loses connectivity and only a hard reset can cure it every 30-40 mins.
4. It is "open source my a***". The only working kernel for it is compiled out of a crippled repo of a hacked 3.4.0, has half of the security fixes missing and is missing a whole raft of key drivers - usb IR, vpn modules, nfs, autofs, other filesystems, you name it.
So end of the day it got relegated as a backup wireless X-term in my house which is of no use once you have left the premises. Even that leaves a lot to be desired - its video subsystem is not particularly fast so the speed is sub-par.
I do not often say that MSFT got the point, but with their campaign on the subject they probably do.
IMHO it is the only use for it at present. If you are working vs windows - install a RDP client (f.e Remmina) and leave it at that. vNC or X for linux environments.