I am currently using the demo version of oXygen and seems to be working great.
I do feel, however, that the editor has a lot of room for enhancements. I have been using UltraEdit (http://www.ultraedit.com) for many years now and strongly suggest the oXygen developers to have a peek at its ease-of-use, context menus and features.
Are you missing a feature? Request it's implementation here.