I bought the unsweetened unflavored store brand almond milk, nothing fancy. It was about the same price as a half gallon of milk.
Good and bad.
Good: Almond milk is great for putting on cereal. It has a really nice almond-y aftertaste, but other than that, I couldn't tell a difference. It is also good to bake with if you are using it as a moistener and not a thickener (muffins are a big yes!). It has less calories, but the about the same amount of protein as milk. Lasts longer than regular milk.
Bad: It is NOT good to drink all by itself. A little chocolate syrup will fix it right up though. It also is not good to use as a thickener in place of milk because, well, it doesn't thicken! It also is not good to use in savory foods, since it does have kind of a sweet flavor.