I was in a similar situation 2 years ago when my company was bought out. In my making my decision I didn't even consider the package. What I was concerned about was "was this still a place I wanted to work?" (yes or no. no waffling) I immediately had my answer and started looking for another job. Your decision might be different, but it should be based on what you want to do and not what the company wants you to do.

Have fun,
Carl Forde