Once upon a time, if you wanted a smoothie, it meant using your gigantic blender that would often leave huge chunks in your beverage, before you then had to pour it into a cup to drink. Not only did this create more mess in the kitchen, but you also lost a fair amount of smoothie when remnants stuck to the inside of the big pitcher of the blender. Thankfully, someone put a bullet into those old ways. Or, a bullet-style blender, at any rate. These compact devices blend your beverage right in the cup you’re going to drink it from, so there’s no waste and no extra cleaning. But what else should you look for before buying one?