If you guys haven't tried Outlook 2007... Don't waste your time. It's terrible. They've noobed up the interface so it's completely different. I really hate it.

I agree that Outlook 2003 was the best, and I really quite enjoyed it. But regardless of what version of Outlook you talk about, they're all bloatware. I really hate the additional features. I never use them!

I am currently using Thunderbird (as of today) and I really like it. It's simple, and gets the job done.