Can we objectively rate speaker cables?

I realize that cables react have different effects on different systems, but within the same system and in general, wouldn't most people agree that an equally pure copper cable of 22AWG would sound warmer than a silver 22AWG (of identical construction)? My argument is that this is true within almost any system. So if we define the parameters, we should be able to roughly agree on "this cable is warmer than that one," unless you're in some camp that believes cables make no difference. The idea is that with such a knowledge base, we would be able to narrow our cable choices based on our own system. I know that for mine changing the LP cables to all silver has drastically improved detail and resolution while putting the copper into the digital part has made sound less analytical. I'd like to get beyond the copper vs. silver issue and be able to compare within cable type.

Also, thank you Nasaman, for being the only person (so far) to actually reply to the question at hand with ratings.

The problem Mr. Tennis is the definition of " warmth". It could be rolled off highs, exagerated mids/bass etc. Certain cables like Cardas do seem to emphasize mid/bass ( or are they rolling off highs ? ) but no one has experience across " ALL stereo systems". Jenny Jones - I would not agree that ALL silver is uniformly " cooler" than copper. It does have a little less resistance than copper which may or may not be a useful thing.

EEGAds Nasaman.....I get totally different perceptions of the cables. I don't have all of them that you tested, but have a few. I let them burn in again, and listened. For instance..the Kimber sounded warmer than Blue, and slower than Blue. I have an all Ayre system with Vandersteen 5A's. EVERYONE I have spoken to recommended Cardas cable to me - I tried them, and they were the poorest sounding cables of all that I tried. Something is going on but I don't know what.

Aint it fun :O ) Lash them cables up and enjoy the ride! I would call Robert Stein at the Cable Company if I wanted to try a bunch of cables without making a large investment.