I have an XDm in .40. When I was trying to decide whether I wanted 9 or .45, I finally decided to compromise and go with the .40. The XDm series is a bit heavier than most other polymer pistols, and I have plenty of fun shooting it.
The reason I like the XDm, which is a feature in common with Glocks, some M&Ps, and some DAO pistols is that there is no manual safety, so I never have to worry about whether or not the safety is on.