One of many products the company TP-Link with whom I am very satisfied. Sure you can to improve what all but compared to its competitors, the device must not be afraid. The safety is ensured by the prior art. The performance when distributing the data packets is ok and sufficient. Here are the provider of the Bottleneck with their completely congested networks (see cable Germany). Wi-Fi is very well served in both frequency ranges.
With 5 stars I rate only perfect products which does not exist actually.