Speaker Jumpers

I appreciate all the feedback. Thanks. I may consider bi-wiring.

... robertjerman: do you think one is superior to the other?

If you like your current Cardas speaker cables and they're not bi-wire, I recommend trying Cardas stranded (not solid) jumper cables instead of going straight to bi-wire. My personal experience is that stock brass jumper plates, or solid rods or plates, had a very negative impact on SQ. I've been using bi-wire for some time, but always used a quality jumper cable when not bi-wiring; using the same brand and model of jumper as the speaker wires. Bi-wiring may or may not do anything for you over the quality-jumper approach.

OP, another thing to consider is to borrow a bi-wire set of cables from your local Cardas dealer, if possible, and try that before deciding whether to use a high-quality jumper cable or go to bi-wiring.

Keep your Cards SCs and get either of these:
https://silversonic.com/products/speaker-cables/bi-wire-jumper/?_vsrefdom=adwords&gclid=Cj0KCQjwjvXeBRDDARIsAC38TP6UT4zwAhKLBCQp5wSAOPipOu2EG9fwqoixK3XaYBtaXho_v1CzOOsaAt4DEALw_wcB
or
http://www.mazeaudio.com/speaker-jumper-cables.html

I use the DH Labs jumper cables and they work just fine.

All the best,
Nonoise