Are Realistic or Cartoon-Style Graphics a better choice?

Much has been said recently about a promise from Blizzard that World of Warcraft’s character models would be updated. New models for mounts and the like are already beginning to appear, to much player fanfare.

This raises the question of graphics. While there’s no doubt that WoW‘s graphics have had some serious work done on them over the years, the character models are still long over due a facelift. But have WoW‘s disney-ish graphics stood the test of time? Are cartoon-style graphics like WoW’s superior or inferior to highly realistic textures and styling like what’s found in games like The Secret World?

What do you think? What games have the best graphics, can realistic character models and graphics stand the test of time, or are cartoon-styled graphics the way to go? What’s your preference?