Short answer: it depends on your system AND improvements from bi-amping rather than bi-wiring is another different animal entirely.
NORDOST has a good succinct commentary:
http://www.nordost.com/downloads/NorseJumperinstructions.pdf
They also highlight that a shotgunned double run of quality cables with quality jumpers instead of bi-wires may be your best bet.... But take it for a test drive yourself.
CHORD has offered their two-bits worth in the same vein.... CHORD no longer makes dedicated bi-wires and also suggest that quality single runs with matched jumpers may be your better performers.
http://www.chord.co.uk/help-and-information/speaker-cable-guide/bi-wire-or-single-wire/
My own personal experiences:
a shotgunned double-run with matched shotgunned jumpers of high-end cables in the diagonal speaker hookup arrangement suggested by the NORDOST article beat all bi-wired contenders and pretenders in my system....hands down
NORDOST has a good succinct commentary:
http://www.nordost.com/downloads/NorseJumperinstructions.pdf
They also highlight that a shotgunned double run of quality cables with quality jumpers instead of bi-wires may be your best bet.... But take it for a test drive yourself.
CHORD has offered their two-bits worth in the same vein.... CHORD no longer makes dedicated bi-wires and also suggest that quality single runs with matched jumpers may be your better performers.
http://www.chord.co.uk/help-and-information/speaker-cable-guide/bi-wire-or-single-wire/
My own personal experiences:
a shotgunned double-run with matched shotgunned jumpers of high-end cables in the diagonal speaker hookup arrangement suggested by the NORDOST article beat all bi-wired contenders and pretenders in my system....hands down