I have spyro's adventure on the wii, and the disc is in okay condition besides one tiny, but deep, scratch. Today it finally gave in during my 100% run on the undead levels and my wii no longer reads the disc. I recently got a 360 and all of my skylanders games are on there, but I know the XPEC edition of SSA has some faults.
However... if I see SSA on the 360, is it worth having for the better visuals? Or should I stick to the wii version? What are the actual differences? (I'm aware mega bomb physics are a pain, for example. Are they bad enough that forgoing this version altogether is a good idea?)