I've taken many pictures of the insides of my vintage Yamaha guitars but none of them come close to looking as good as a new guitar being put together. Maybe I'll find some OK pictures to post in the next few days.
One guitar that really shocked me was my 2005 Martin DX1. It has very simple top bracing. I was actually very disappointed after touring the Martin factory and seeing all the work that goes into the higher end stuff. I'm sure I have pics.
I always thought the X series were Martins "A" bracing but it looks like they are using something really funky for the HPL tops