[vacri]

Datapoint to support you: this conversation reminded me to do an update on this debian sid laptop, which is a couple of months un-updated. about a gig of downloaded updates... and I came back to my lockscreen which had a whole new look, and my desktop wallpaper had changed (I think I was just using the default before, so understandable).

It's fine because I understand what Sid is about and this is to be expected, but I wouldn't suggest this to a naive user. And since Testing gets these changes in short order, I'd stay away from that as well if the user isn't comfortable fiddling.

So yes, stable + backports, unless you're comfortable with change/fiddling (same with any rolling distro).