google apps vs. microsoft

We're working on a major website overhaul for First Pres' right now. The conversation has come up that we should potentially use Google Apps for email, calendars, shared doc's, etc. Microsoft is what the majority of people are familiar with over hear and what they use for online access to calendars and email. When I talked with the folks that have provided IT assistance over here for several years, and mentioned that this might be a worthy switch they asked with exacerbated frustration, "WHY!?"

"Uh, because it's better," I responded.

What say you? I need your input. What do you use? Do you hate it? Like it?

Let me know.