I'm pretty sure that Firecore is about the only one making a good plug wire that is cut to length.
I've been screwing around with this crap for a long time and I've never seen a pre-fit set I didn't think was too long for my tastes, but I haven't seen a set of Firecores. They may be fine.
I prefer Mallory wires, which you can get again, made by the company that originally made them.
About 6 months ago you could get Mallory ceramic boot plug wires for 48 bucks a set. I should have bought 10 sets. Now they are about 100 buck or so and you have to cut them to length.