There haven't been much boom pole discussion here lately.  I figured we can get one going.  I have been using an internally straight cabled 16.5' old style VDB pole for the last 3 years.  While it is light, I feel there is too much flex.  Plus, it is relatively long when collapsed.  What are your preferences on boom poles?  Is there certain reasons you go with externally cabled over internal?  What about coiled cable vs. straight cables.  Do you feel there are sound quality/RF difference