I have a "Music Timbre" tri-alloy cable (gold, copper, silver) from Northwest Enterprise, which, I believe, is not produced anymore. The sound is smooth yet quite articulate in the highs and more detailed than my previous Boldercables M-80 (MSRP $125), which also bordered on bright in the lower and mid highs in my system. I think this is a good example of how brightness is not to be set equal with detailing.
I bought the tri-alloy for around $130 used and similar cables could be found on Audiogon for around the same price or a little bit more. For example, there was a used Aural Thrills tri-alloy cable that went for 125 shipped on Audiogon. I was quite sceptical about alloy cables in the beginning but really like its sound by now. Not sure if it's neutral but then again, what is neutral?
I'm also interested in getting one of those Aural Thrills active cables one day, maybe the active Palladium version, which according to the guys at Aural Thrills is their most neutral sounding one...
Another cable, which I liked was the cable Jan from Meier-Audio makes. At that time I was only able to compare it to my Oehlbach NF2 but the differences were quite apparent (i.e. in the context of differences between cables). And it has better build quality than most cables I have tested (including my tri-alloy cable).
In any case, I don't know if these are the best cables around but they might be worth a look.