PBlank,
I appreciate both of your responses. I have heard pros and cons both ways but it appears that there is no definitive text on this subject.
First time I've heard of pros and cons on this subject. VOR procedures have had system tolerances (flight technical error) evaluated and procedures developed over the years on the premise that the course deviation indicator CDI would be used for radial tracking.
RMIs have issues that make them suitable for reference but not for VOR radial tracking.
What does the autopilot used when engaged in nav mode?