I recently bought BBEdit 7 after having tried almost every other serious editor available for the Mac. Mostly, I like it a lot, although it's lack of macros and temporary marks is a little annoying.
What is really annoying, however, is that when I select text in any other application (Safari for instance), then select BBEdit -> Open Selection from that app's Services menu, the OS 9 BBEdit icon appears for about one second in the dock, even though I am using the OSX version. It then vanishes without opening a new document with the text. After some experimentation, I discovered a way to make it work:
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040101170241563