The 409's are deemed a race only wire. When I asked the Taylor rep about them, he told me they weren't really suited to any vehicle a person was concerned about supressing electrical interference. (IE stereo hiss, whine, etc).
The Thundervolt 50's are the more street oriented of the two.
Livewire also makes a really nice 10.5" wire....and I believe they come in blue, black, red and yellow.