I started at level 2 and was so impressed I immediately upgraded to the level 5 for the speaker cables and interconnects. I would never ever, ever have imagined the immense change those cables made in my system... huge soundstage, detail, bass response, everything. Nothing short of stunning. I never poo-pooed the importance of cables, but I thought their contribution was somewhat minor. I thought I was happy with Canare's $250 cables. I thought that'd be enough. The level 5's create a 300% improvement in the sound. I know this must sound like hyperbole, but it's not. I mean, come on, cables??? But it's true. My components include Pass Labs 250.8 and B&W 803 D3 speakers. I use the XLR connectors on the MA5 and the spades on the SP5 because the Morrow banana plugs are flimsy. Obviously, mileage may vary. Also, I suspect it's worth spending the money on their 10-day burn-in; the cables work perfectly from the start (and I don't have the patience to sit through the 'improvement' process). Morrow gives an explanation of why their cables work so well and are award-winning. Frankly, who cares? All that matters is how they sound and they are amazing. They have a 60-day return policy, so you're only out the $15 shipping cost. It's worth trying the cables. Again, I am not a cable expert. I have not compared these cables to all the other higher-end cables out there. But I can testify to these cables.