A few people especially on this forum have complained. Over on the BT forum it is more positive.
A fair few of us on another forum had many issues with the HH5s. All of us have now got HH6s and have confirmed all of those issues have gone away. A couple of guys here also confirmed the same issue, and that the hh6 fixed it.
The most common issues with HH5 were:
1) Type B - when splitting 5ghz and 2.4Ghz bands, the 5Ghz band would get stuck at around 10Mbps over wireless
2) Type A - throughput would randomly get stuck around 30Mbps when splitting the 5Ghz and 2.4Ghz bands on 5Ghz
3) With 15+ devices connected both models would reboot themselves
PROs for me
Much stronger 5Ghz wireless signal (great as that is really all I use)
Never reboots or crashes (apart from scheduled 14 day reboot) with a total of 40 wireless devices in my home now (I know jesus christ right)... We average around 15 devices connected at any one time.
Some users report it syncs slower than HH5. Mine seems the same though.
2.4Ghz signal seems slightly worse than the HH5A but is a lot better than the HH5B.
I got mine at the start of May and have not unplugged it even once.
Out of the box I split the 2.4Ghz and 5Ghz bands, disabled smart setup, disabled automatic wireless channel selection (have fixed channel 1 and 36).
For me it has been the very best router I have ever owned. It is honestly flawless in my home.
Range is fantastic, goes through 4 solid walls and still gets me 25Mbps over wireless with a -85 RSSI. I have nothing connected over ethernet so cannot comment on that.
I am convinced those with issues have a faulty device, it is possible there is a bad batch floating around or something. Certainly, for me, this beats every ISP supplied router.
FYI, I will be selling a smarthub (shrink-wrapped still) shortly on ebay if interested.
Edited by ukhardy07 (Sat 10-Sep-16 00:10:07)