Linksys Velop is Linksys’s first wi-fi mesh system, and it was launched in Singapore on 12th April 2017. They are the second company to launch wi-fi mesh system in Singapore. The first being Netgear Orbi.
I have been using eero since January 2017 and eero is a wi-fi mesh system as well.
eero is a home wi-fi system that is based on wireless mesh network (WMN). Accordingly to Wikipedia, A wireless mesh network (WMN) is a communications network made up of radio nodes organized in a mesh topology. It is also a form of wireless ad hoc network.
eero is not cheap. A single eero retails for US$199 (S$285), a 2-pack eero retails for US$349 (S$500) and a 3-pack eero retails for US$499 (S$714).
The EA9500 is the highest-end router of the Linksys Max-Stream family. I did a review of the mid-range model which is the Linksys EA8500 Max-Stream AC2600 Router back in October 2015.
The D-Link DAP-1860 operates on both the 2.4GHz and 5GHz wireless bands using concurrent dual-band technology with four MIMO external antennas. It supports MU-MIMO.