The CEOs of other networking brands may well be losing sleep over TP-Link. In just a few years, this Chinese firm has come from nowhere to carve itself a slice of the market, not just by undercutting its rivals, but also by making consistently high quality products with good design value. Most of the TP-Link 802.11ac routers I've tested have been affordable without seriously compromising on quality or performance in any way. Although the Archer D7 was a bit disappointing, the Archer C7 outperformed 802.11ac routers that cost considerably more.So the pressure is now on the firm to continue this tradition with the new Archer D9 802.11ac router.