The last I installed CodeRush was about 5 or 6 months ago and it crashed VB every 2 minutes, when I wanted to type IF it randomly became I()F so I had to restart Visual Studio. It may very well be fixed now but that was my experience
My apologies for the delay in responding. That random "I()F" issue was an old problem in Visual Studio, as I recall, and was corrected in their service pack. If you try CodeRush again, be sure you have the latest update to VS installed.