These are the list I came up with under $250 used.
I'm planning to get little higher grade for fronts, for example AQ Jaguar for fronts and diamnondback for rears or AC Sapphire for fronts and Triode Quartz for rears.
Is that good idea? I used littl bit different grade for speaker cables anyway... AQ Bedrock biwire for fronts and Type 2 for rears since my front speakers are biwireable while rears are not. I'm leaning toward Alpha-Core but it's not many avaiable as others. Also considering Kimber and AQ.
Audioquest
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diamondback, king cobra, jaguar
Kimber
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pbj, timbre, hero, silverstreak, kcag
Alpha-core(all silver)
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Micropurl, Triode Quartz, Sapphire
Transparent
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Musiclink, musiclink plus, musiclink super
MIT
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AVT3, AVT2, AVT1