With netflix, it all depends on what you are watching.. and via what.
Some things like most browswers.. even for HD content, will max out at 3mbps.
When you get into a full HD capable device (and content) your looking at between 5-8mbps.
(4k, is up to 15mpbs?)
So a super high package, is not necessarily always needed.
But can be nice.. depending on who/what your doing.
If you are a multi usage household, like mine, where someone could be streaming in HD, someone else playing a game, 1-2 others playing on mobile stuff from facebook to games there.
All of them add up. And the closer you get to maxing out the connection.. can cause it to choke.
This isnt going back too far.. but even back to the 25-30 mbps timeframe.. a HD stream, a torrent, an online game, all at the same time? Not really.
But when i went up to the 60mbps (and now 100), i am able to do all of them at the same time.
Rogers Ignite Xi6, LG 47LV5400 LED TV, Yamaha