Speaker Jumpers

...I think I hear a diff since I biwired  my Gershman Avant Gardes - have you considered that? 

Bi-wiring is different than using a few inches of 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.