My problem with the term "cage" is that any mesh can be a "cage". It's not an excuse for a sloppy base.

 With that in mind and looking at these renders, I really don't see what the problem is with the ear, vilters. Sure it's a little blocky at some angles but that's to be expected in a very low res mesh (I'm guessing the head is less than or around 2500 polys?).  After subdivision it looks fine. Soooo...back on topic...any other tests, Snarly or are you calling it a day?