I will go with Crush. Coming off the heals of my favorite Bon Jovi album - the album that made me and kept me a fan (These Days), there was Destination Anywhere, with a completely different sound and writing as been done before or since.
From JBJ's third solo album to Sex Sells to Crush, I love every bside released and a lot on the box set from that era. They were so good and still so hungry back then. I find the Crush era very interesting.