I currently have the B&W 603, fronts and center, with the ADCOM 7605: 125W X 5....

I am a novice to a lot of this stuff but my ears are always open when someone tells me something will sound much better but I need to invest more. Case in point...I am being told that the B&W speakers that I have would be "MUCH" better sounding, whatever "MUCH" better means???, if I invest in an bigger Amp with 200W per channel or higher....thoughts????