Arey Soul has a set of free lights in a thread found in their forums.  Perhaps you might try one of those sets to see if they help you with better shadows.

Sorry, I don't have a link as my laptop died and I can't access my bookmarks.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi