Hi,
Currently I'm on a NBN plan and have a crappy $60 single band VDSL modem which the wifi doesn't work 60% of the time.
Was considering getting the Google wifi and keep using the crappy modem as a modem only.
My question is, do you guys know if i should invest in a "good" modem or is the wireless router all that matters?
I mainly use it for streaming and browsing.
I'd first suggest using a wireless network diagnostic tool similar to this, to see if there's interference from say your neighbour's wi-fi network. If there is interference, then I'd suggest switching your wi-fi channels to something less utilised in the area.
If that doesn't help, then if your internet is stable and you're able to achieve speeds you're happy with via Ethernet, then getting a wireless router or wireless access point is sufficient if your only issue at the moment is Wi-Fi.