Everything!
Honeycomb is not perfect, but is IMO the best tablet OS available right now. And it will only get better.
And on XDA forums, everything gets better sooner or later even if the stock OS doesn't do something that well

Lying in bed and being able to browse THE FULL WEB, not the Apple version of the web.

Lying in bed and being able to fully control my desktop with sounds and all, just with a couple of clicks using splashtop (comes pre-installed).


My only minor complaints:
(minor, because for the price.. there is really nothing better out there)

I have minor light bleed on the right side of the screen, only really noticeable while booting up.
Very common thing with these IPS screens it seems.

I also have the common problem with the TF of having the left speaker volume way lower than the right speaker, that can be fixed by changing some parameters in a system file... but I need to be rooted first.
Not a big deal as I use it with hearbuds anyway.