Some quick background: I had been using Windows Live Mail full-time, but switched to Outlook on Saturday. Five weeks was enough for me. The newer Live Mail version is just as clunky as the old one. It's finicky and bothersome. Not that I like Outlook much better. I still resent that the program killed nearly all competition for e-mail, contact and calendaring. There's some revival, because of cell phones and Web services from companies like Google. But nowhere near enough.
Griping aside, I'm finding Outlook on Windows 7 provides an almost acceptable user experience. The software runs faster and doesn't hog all the system resources, as it has in my testing on Windows XP and Vista. Today's phishing e-mail gave me a reason to actually appreciate Outlook.