quality jumpers

Use a piece of the same cable you use on the speakers.

FWIW, I've tried the Au24 jumpers with my AZ Holograms and thought it sounded unnatural. I had some AZ Satori jumpers made and it sounded much better to my ears (Robert Lee suggested this combination).

I've found that Audience Au24 cables and jumpers work much better as a set.

(Disclaimer: I'm a dealer for both Audience and Acoustic Zen).

I have used a number of jumpers on my Acoustic zen Hologram cables, including Acoustic Zen ones, but the Audience AU24 I aquired were far better. Logically it ought to be better to use the same brand of cable and jumper, but it ain't necessarily so. Others have complimented the Audience line in general.

I can't tell you the specific differences between the ones you mentioned asides from the obvious differences...(eg. one is copper, one is silver...doh!). However, based purely on anecdotal experience (not scientific), I would recommend using a jumper that is as close to the same cable as your speaker cables as possible. IMHO, you get much more cohesive results...