Schlyne, I was at ReptileFest @ UIC too, and that same Angolan caught my eye and I spent some time with it's owner chatting and drooling over the snake.
I truly think in 5 years high-end Ball-Python morph's will start to level out and everyone will be looking for Angolans.
The other snake that got me thinking about what to put into one of my empty enclosures was the Black Headed Python a couple of rows over.