I have used a BT Voyager 2110 wi-fi router for
some time without any problems.
For security I hide the SSID, use MAC filtering
for the two desktops and one laptop in my
household and WPA-PSK encryption.
The setup utility security page has an item WPA
Group Rekey Interval which has a default
setting of 0 seconds. I cannot find out what
effect this parameter has. The BT help line was
useless, the guy I spoke to knew less than me
about encryption and, after disappearing for 5 minutes
while I held on, he came back and said I
could ignore the setting. So I told him this
clearly meant he didn't know what the parameter
is.