There are many different styles of blenders, and they all basically do the same thing – blend. Some may have special features such as speeds, power, and design. A few may have optional blades for milkshakes, although the regular blade can make milkshakes just fine.
The Oster 14 speed blender is very basic. White base with a glass container. The glass is better than plastic because the plastic can discolor or get scratched, making what is going on in the blender difficult to see.
Nothing stands out as a problem with this blender, so GoodHealthWay recommends this one. Unless you really need something with ultra power or size, this is the blender to get.
If you add milk, some good frozen fruit like strawberries, mango slices, and frozen pineapple, and blend for about 1 min. you will get a perfect no-chunk smoothie. Why spend so much on something like the Ninja?