I’ve been an Outlook/Exchange user for years. Plenty of years. A couple of years ago I used Gmail for a year, and I really didn’t like it much at all, as it was seriously underpowered for professional use, but my hosted exchange had gone walkabout. (I kept getting promised it was “almost there”, so I kept hanging on waiting for it. Silly of me.)
But a hosted Exchange server is expensive ($250/year expensive), and Gmail has apparently improved, so it’s time to investigate a move.
However, I’ve still got a major problem with Gmail – I really don’t like doing email in a browser at all, which is a bit of a problem given Gmail is built around the browser.