Many of the high-income countries have reimbursement systems that differ greatly: the most effective, able to reconcile a high adoption rate with a high rate of satisfaction and actual use of the device, are those that favor the customer's freedom of choice (thus triggering positive dynamic competition among operators), leaving the option for the consumer to integrate the reimbursement provided to access higher-range products and services than those guaranteed by the basic reimbursement, adequate as they may be.