I think the major reason that nobody uses Delco's is that Delco only sells repalcement TR wires in a universal length, plus the wires are black and not quite the same on the boot end.
Personally, I'd pay a lot of money if somebody had a NOS set of wires laying around, because I think orig. Delco stuff can't be beat.
I'm using Red's wires now. Nice wires, and reasonably priced. Only thing I'll say that after installing them a month ago, I pulled them off (and yes, I used a boot puller) and two of the wires are now garbage because the ends pulled off. This seems to happen a lot more with aftermarket wires than with orig. wires, because I changed plugs all the time and never had a problem with my delcos. But otherwise, they are nice wires and Red ships them out fast. $33 bucks shipped - can't beat that.
Just my opinion.
Rich