I am in the processing of uninstalling it right now...
The features are great; in the short time I tried it, I really liked it.
But it slowed down my VS2008 terribly. I would open a solution and wait and wait. Drawing all the UI guides would slow everything to a crawl. Now, I realize my company hasn't given me the fastest machine around, so I'd say if you have a beefy machine, you might not notice this.
I also didn't like the extra folder it created all the time (*DXCore.Solution), but I could look past that if I didn't spend so much time waiting around.
Running the newer version (on the same machine as above) is much, much better. Opening a solution does take a little bit longer and there is an occasional pause but certainly worth it for the benefits of CodeRush Express.
The extra folder has also been removed.
Very nice job by DevExpress and I'd say it's definitely worth the time now.