NVRensburg:
My husband opted for hyperfibre as he games and he wanted the best "ping"
I seriously knew that was the case. Basically anything will suit but would for your case recommend a provider that provides a mesh kit. You can even get away with 300/100Mbit and I doubt you'll notice the difference here.
If you want something ASAP as you're disconnected then Spark, grab a Spark Smart Modem 3 along with a Smart Mesh (to replace your extender) which can be picked up from the store. You should be able to do the full end to end (sign up and pick up the router) from a Spark store.
Internet in NZ is incredibly good but it sounds to me the Spark Gigabit plan will suit your needs fine. You could even go for their 300/100Mbit plan and I highly doubt your husband will notice any difference here too. Having the best ping is totally unrelated to the speed of service you receive.
You can also stay with Quic however I'll recommend downgrading to the 900/400Mbit plan and just picking up a router. As others mentioned here, would recommend grabbing a mesh kit like the TP-Link Deco.