The 411 on AT&T

I'd like to hear what folks have to say about their experiences with the performance of different brands/models/lengths of AT&T glass optical cable.

So far, I've tried a Luminary 1.5m (Aural Symphonics I think), a Chromatic Technologies 2.5m, an Audioquest Optolink-2 1m, and a Wadia 1m. I thought the Luminary blew the rest away (it's also has directional indicators.)

I have no experience with XLO, Translite, or the Aural Symphonics Optimism version 1 or 2.