Windows 7: Thunderbird vs. Windows Live Mail

Thunderbird or Windows Live Mail?
Which is better?
What is your opinion and why?

I switched from Thunderbird to Windows Live Mail because I could sync a calendar and contacts with it across three separate computers. Each of my three have a shortcut on the desktop for Windows Live Mail, so wherever I am, I can quickly access all of them. Thunderbird doesn't have this option, and I didn't want to run it from a flash drive, because I might not always have them with me.

If it is a single computer you'd be installing this on, there's no better or worse...it is just up to your personal preference.

+1.

Are you saying that WLM stores this info online somewhere?

Yes, if you log in with a Live account (not necessarily a hotmail account), then it is all stored for you. I have a Live account from TechNet and my Xbox ID, etc. I don't have a live.com or hotmail.com e-mail address though, so it's important for me to specify that this is not something through Hotmail. When you install Windows Live Mail, in the upper right, you can choose to log in with a Live ID. If you do, and do so on all other computers using WLM, you'll have a synced contacts list and calendar.