Speaker cables - long - for Von Schweikert

I have a pair of VR 4 jr's, usually powered by two Golden Tube SE-40's (run as monoblocks, 80 wpc). I need 25-foot biwire cables, which means I can't afford the expensive stuff. I listen to all kinds of music except hard rock. Any suggestions for affordable stuff that will work well with my jr's, in a long run?

Thanks - David