For thos of you who have flown using both types of flight directors, both single and dual cue, which do you prefer and why?

WHat are the pros and cons of each?

All of my professional flying has been with the widget shaped FD's of the CRJ, but I've ferried at P210 that had dual cue, although at the time I didn't know how to use it.

I would think that more would prefer the single cue because it provides bank information as well, rather than just a need to turn.