Do you want to do server support or network support? guess it depends what you're trying to do. They are two completely different tracks, so comparing which is better just leads to the question "better for what?"
Are you working in IT now, and if so, doing what? What interests you more, servers or internetworking?
I would give a lot of weight to what you think you'll like doing. You should also check the local job market - what are employers looking for?