I prefer my Acoustic Zen Silver References to the Outlaws, but the Outlaws do hold their ground. The AZ's are more extended and airier. They throw the most amazing soundstage. They are a very cohesive sounding cable, in that everything is in balance. No noticible peaks or valleys.
In comparison, the Outlaw's bass response is equal to that of the AZ's in that I could not tell a difference between the two. The soundstage was a little truncated. However, there were two main differences between the two that I could tell. One was a slight hump in the midbass/upper bass of the Outlaws. Things got slightly muddy in this region. which makes the sound a little on the warm side of neutral, and congested with some music. The second difference is the lack of extension up top. A little less air and a little less sparkle.
Still, the Outlaws are a bargain, and the differences between them and the AZ's are not earth-shattering, although noticeable and important to me. Are the AZ's worth $898/meter? Hell no. No cable is, in my book. Are the Outlaws worth $50? Yeah. I'd pay twice that. Maybe even three times. They're excellent cables. When I get around to it, I'll compare them to a pair of DH Labs.