The best broadband speed is relative to your needs. This is because you don’t want to pay for a package that’s too expensive that you don’t fully use. With that said, some providers can provide full fibre speeds of around 600Mbps.  If you’re a light user of the internet, where you just check emails and browse news sites, then you’ll only need around 10MBps t be comfortable.  If you’re a single user streaming video or using the internet more robustly, then you’ll likely want a minimum of 30Mbps.  For families with multiple users that are likely to be using the internet simultaneously, you’ll want speeds of around 60Mbps to ensure that there is no buffering or slowdowns.  If you’re an avid internet user, streaming or gaming in 4K, or need the internet to run a business, then a speed of 100Mbps or more will likely suit your needs.