Man, where to start?
First of all, there are MANY hard, reflective surfaces in your room. That is the cause of the hard sound you are describing. And slap back echo from a lively room will contribute to confused imaging and soundstaging. Early sidewall reflections can also cause the image shift you hear. Don't spend another penny on electronics until you have invested some time and money on room treatments. Free standing room tune panels (or variants) at the first (and second possibly) sidewall reflection points, an area rug over the floor, corner tunes in the uppermost corners, and some traps or panels directly behind the speakers. That should get you started.
Shakey
First of all, there are MANY hard, reflective surfaces in your room. That is the cause of the hard sound you are describing. And slap back echo from a lively room will contribute to confused imaging and soundstaging. Early sidewall reflections can also cause the image shift you hear. Don't spend another penny on electronics until you have invested some time and money on room treatments. Free standing room tune panels (or variants) at the first (and second possibly) sidewall reflection points, an area rug over the floor, corner tunes in the uppermost corners, and some traps or panels directly behind the speakers. That should get you started.
Shakey