For Sales people LinkedIn Navigator is the best as it makes it simple to build and grow relationships with over 500 million prospects around the world. It helps to find the right people and potential clients quickly.
LinkedIn Navigator allows Real-time sales updates to maintain track of all the records and never miss a lead. It even allows to save the dynamic leads to avoid confusion by reaching the same client again. If even offers a free trial. This works best, as it is backed by database of the largest professional network across the globe.