Wii: 1-2% at the most. Rarely heard stories about Wii dieing.
PS3: 3-5% Some problems here and there with the YLOD, but I've never personally heard anyone who's ps3 died.
360: 20% at the very least, I've heard so many stories and complains, I can't see it being under 20%. A friend of mine had to return it a grand total of five times. Even if the newer models are more reliable, you can't just ignore the millions that broke during the first two years of it's lifespan.







