The only "best" hotspot is the one that fulfills your needs at a price you want to pay. Just like everything, they range in functionality from your phone to a dozens of stand alone units. Will you be using it for work, streaming, or just checking emails. Some carriers are better geographically than others, so again - depends. Do you need unlimited data? Who is your carrier now? Maybe the have a bundle to add it to your plan. But there is no "best". Each model - including your phone and each carrier have their own advantages and disadvantages.