Hi Becky, our cavaliers ears seem a bit softer than the rest of their hair as well. I think they just secrete more 'oil' in that area...
Our girl Belle has an extremely thick fluffy coat while our boy Bobby has a sleeker thinner one... I've seen many cavaliers with varying coats, many are thick and luxurious whilst some are shiny and sleek.
I give my dogs cod liver oil, I try to do it a few times a week. The fish oils do help with their skin and coat. If your Toby enjoys fish, give him some tinned tuna, salmon or sardines once a week as a treat, that might help with his coat as well. Our dogs go mad for the stuff, it's a funny to see how excited they get about it!
Desrae, guardian of two tri-coloured cavaliers, Belle 3 years old and Bobby 1 year/8 months.