I like my XDm. I paid $499 a year or so ago from Cherokee. Threaded and suppressor sites already installed.
Same here. It was a pretty good deal at the time. I have shot it with a suppressor on it, and it's fun to shoot. For the money it's not a bad choice. Also, someone else mentioned the M&P 45, which would be a little bit cheaper. I am a pretty big fan of the M&P line. So you might want to check them out, too.