I should've known a bunch of u2 fans would tell me to go with my gut!
One is manager of marketing and PR for a non-profit with a great mission. It has better benefits/pay across the boards and would give me more responsibilities, which scares me but the fear is a good thing because it means I know that I would grow a lot. The position also gives me a broader range of things to do--i.e. if I don't enjoy one part of it, there are many other things I'd be doing that I would enjoy.
The other is with an organization I've always wanted to work for, and one whose mission is right in line w/my personal values and academic background. The position is a development assistant position, and a big chunk of that is grantwriting. The position itself is safer because it is more of a team position. It scares me because I've never done grantwriting, and if I find that I don't enjoy it or am not good at it, that's a huge part of my job that I won't enjoy. I love writing, and am good at it,but I've never relied on my writing skills in a deadline-driven, job situation (just in school!) so I don't know if I'd thrive or if it would take something I love and turn it into something I don't enjoy as much.
