I agree lifting any cables makes a huge difference particularly in imaging and smoothness. My experience tells me not to lift cables more than about 1/4" to 1/2" off the ground otherwise you lose body. Also avoid contact with solid materials such as metal or wood; e.g. corners of cabinets, etc. as this can add hardness to the sound. Plastics are one of the best materials to use under cables. Styrofoam cups and plastic drink glasses are a cheap way to go. Ceramic materials tend to add a bit of hardness to the sound.
