These blenders crush the competition.
If you make a lot of smoothies, sauces, and other blended foods then a high quality blender is in order. Over the years, I have owned several economically priced blender from some of the biggest names in kitchenwares but their lifespan in my kitchen was always short as they broke or the motors burnt out due to inferior parts and a lack of horsepower.
While it is on the pricier side, the professional grade Vitamix 5200 blender is more than up to the task when it comes to blending even the toughest ingredients. Its variable speeds allows you to produce a variety of textures and the durability of its components ensures that it will far outlast cheaper blenders.
If you are looking for something that still packs a lot of power without the high price tag of a Vitamix, the Oster VERSA Pro (pictured below) is a quality blender capable of handling your blending needs.