I have already read the first two books that are on your list. I am currently reading an Ann Rule true crimes book titled Empty Promises. When I'm finished I will be reading:
"Circle of Fire" by Joyce Eggington
"Ghost Ship" by Brian Hicks
From Season 1 my favorite is "Boom". Mostly because Nick is a suspect in a murder.
Season 2 it would be "Ellie".
Season 3 would be " Last laugh".
Season 4, not sure of the name of it but Nick tells Grissom he doesn't want the promotion after all.