So if anyone is reading and is interested, I decided to go for a Amplify HD setup and WOW, what a difference. On a 100mb package, in the rooms we were struggling to get a connection, we now have 60/70mb download and 10mb upload, which in an old building like I live in with mega wifi resistant walls is great.
Also very impressed with how quick the system was to setup. Just switch the VM box over to modem mode, plugged in, followed the instructions on the Amplifi app and done. Took 10 minutes to setup.