I've got the pleasure (thanks to Tristangage) to get my hands on the retail version of Office 2011. Yes, it's the retail version, not beta. I know it's not being released for another month. I haven't had much time to play around with it as I got it today but so far, the experience has been nothing more but positive. The apps feel very responsive. Actually, it feels like I'm using Office in Windows Outlook seems to be pretty equal to the Windows version. I don't know what to test so please ask if you have anything on your mind that I could try. I've included a screenshot of every app, feel free to take a look!