Silver Speaker Wire Recommendations?

You might even consider a silver / copper blend like Harmonic Tech Pro 9's or Acoustic Zen's Satoris.

Not only are they both quite detailed and sweet, but their pricing is even sweeter.

For a used 10 ft pair you are looking in the $500 to 900 range.

The Alpha-Core MI2 silver cable (called the "Divinity", I think) is an excellent product, and may be within your price bracket (depending on cable length). For more info, look at Alpha-Core's Web site:
www.alphacore.com

You might also want to consider the Silver Lace speaker cable from HomeGrownAudio. See their Web site at:
www.homegrownaudio.com/

Might consider trying a DIY silver foil cable. Would come in around $350 and pretty easy to build. Of course if looks or braggin rights matter then you might not care for these. Check out audioasylum.com

I recently installed a pair of Analysis Plus Silver Ovals and have found them detailed and open, without the "harshness" I have heard from the limited number of other silver cables that I auditioned. They will easily fit within your budget.