Still running /c classic avatar shapes, skins here.
Haven't seen much reason to change, although, truth be told, it's probably due to sheer laziness on my part. I did spend a lot of lindens (in the day) to buy this shape, and I LIKE it, dangnabbit!
Of course, my RP group has started educating us on MESH heads, etc, for general avatar customization and education.
We'll see if this old dog can learn new tricks.