In a word, yes - if you've the screen/sound system (which you certainly do - nice set-up, sir
) to take advantage of the S760's superior sound and picture capabilties.
The S360 and S560 are essentially the same player in performance terms, with the latter adding the wi-fi connectivity option also boasted by the S760. But the S760 also includes many of the step-up performance features of the @£1000 S5000ES....
With your screen and receiver, i'd expect you to see and hear benefits over your Panasonic 'BD60.