Before the 2013 edition of the suite, I found 365 to be a cluttered 'me too' offering that did nothing to differentiate against Google Apps. Microsoft has indeed come a long way with the service as a whole. Just peruse some of the brutal honesty I wrote about Office 365 in the head to head piece I did against Google Apps back in mid 2012, and you may be shocked about my current viewpoint on the product.
And don't get me wrong, I think the platform is leagues better now than it was just a year ago. When it comes to Office 365, some people think I'm too soft on Microsoft because I'm always writing about the good things I see in the service.