I have the Netgear D7000 Nighthawk AC1900 router and find the WiFi signal to be very good. I get a download speed of about 70 Mbps when on a wired connection. The router has dual band Wifi and when connected to the 2.4Ghz band I generally get max speeds of 40-45 Mbps but when connected to the 5Ghz band I always get the full speed of 70Mbps. The 2.4Ghz band covers my entire house and garden with the 5Ghz band covering the house but does not stretch to the border of the garden or into the separate garage. I don't get dropouts using WiFi and have a solid wired connection. The only downsides of the D7000 are the User Interface which I just do not like and the router itself being on the large size. I have never used the standard Plusnet Hub so can't compare it to the D7000.
The problem you have is that there are so many variables that come into play when connecting to WiFi. Just because the D7000 works for me does not mean it will work for you. The location of the router, the WifI frequency and channel selected, the type of property you have and the level of interference from other WiFi networks will all affect your connection as will the type of receiver used in each connecting device.
