I've ordered some River cables to check out as I love their speaker cables. Best "cheap" cable is the premade George L's. My boss is a major league guitar guy and he uses canare cable on everything in his rig right down to the tuner feed. Stubborn SOB refuses to go balanced, which I believe is the way to go if the cable needs to be longer than 10 feet. Radial out in Vancouver makes a really cool guitar rig converter to do this.