Either one you go with first is fine as both are accepted as exceptional cables for the money. You bring up an interesting idea about using the Duelund in Bob's cables. I've wondered this before as well in regards to his power cables in using some of the Furutech wire that's been out lately. But I know the price would be much higher and for what amount of gain to be had may not be worth it as Bob's pc's are already great performers.
The Duelund however may not be as expensive to try in the speaker cables. His sc's are some of the best out there right now so why mess with a good thing but this would be an interesting experiment to see how his technique with the graphene works with the Duelund.
@rgrost
Any thoughts on this Bob?