Either will make no sonic impact on the sub output. Use any or a cheaper cable even to save money.
Good Luck
------------------ The things we own end up owning us
for a sub cable, RG-6 works extremely well. RG-6 comes with two different kinds of center conductors, one is solid copper, the other copper clad steel. get the kind that is solid copper and either put RCA's on it or use F connectors with F to RCA adaptors.
it's cheap, works as good as anything else and is in-wall rated.