Once you get used to a DA brush it's really hard to go back to a single action, isn't it?. I just feel like I have so much more control to do what I need to do at any given time.
I did basically the same thing, started with a Badger 200 and moved over to an Omni. I keep the 200 for "General Coverage" but even so find myself using it less and less. It just doesn't feel right any more.