Best Speaker wire with Rogue Audio amp and preamp for $2K or less?

I am hoping to get suggestions for speaker wire... My system consists of Silverline Sonata II speakers, Rega RP-6 TT, Rogue Audio RP-7 tube preamp, and Rogue Audio Classic 100 tube amp.   Absolute Sound recommended Siltech Speaker wire with the Silverlines, but it is too expensive.  Any recommendations would be appreciated.  
Right now I am using 16 Ga in-wall cable, so just about anything will be an improvement!