I use Analysis Plus Yellow Flex Ovals for every inch of my guitar signal... and yes, when I replaced my Monster Rock connectors with the APs it made a HUGE difference. I felt like I was hearing my Gretsch breathe for the first time. So of course, I had to try replacing my Monster Bass cables with APs from my guitar rig. Frankly, I couldn't hear much difference if any. Certainly not enough to invest in the AP cables for my bass rig. I use Monster Bass to run lengths and those little right-angle cables you get out of the jar on the counter at GC for my pedal board. With my active EBMMs the setup sounds great. Perhaps in a studio setting I might be fussier... but on stage I do not believe that you or your band or your audience would hear a difference. Go for durability... which of course might lead you right back to AP (I know their top-of-the-line cable is so thick it hardly even bends). My #1 criteria for any cable is a lifetime warranty. I love how anytime a Monster cable goes out (which is infrequently, IME), you can just walk into GC and slap it on the counter and they give you a new one, no questions asked. That's my kind of customer service.