I'm looking to have two pairs of biwire QED cables (which I already own)
fitted with QED Airloc Banana plugs using QED's Airloc Crimp tool. Any
suggestions on who'll give me the best deal? I'm not too fussed as to
whether it's the MK-1 or MK-2 plugs (although I'd hope the price might be a
bit lower if I go for MK-1s).

Also: one of the Biwire sets is actually four runs two strand (i.e. not
biwire) Silver Spiral 2 cable; given the gauge of the cables, will it even
be possible to crimp two strands into one banana plug at the amp end?

Thanks for the help!

Best,
Alex