Modern has changed.
Ever since I started playing the format on the SCG Tour® in late 2015 it has been a format where you could do consistently well with any deck as long as you knew everything about it. If you had a gameplan for each matchup and knew exactly how to sideboard to implement that gameplan, then you had just as good of a chance to win the tournament as anyone else, no matter your deck choice.
I'm not convinced this is the case anymore as the top decks of the format look to be far and away better than the other decks right now. Sure, any deck is capable of winning a tournament because the margin between winning and losing any individual match of Magic is quite slim all things considered, and therefore it's possible for any deck to run hot over a given weekend. For example, Jund won #SCGINDY a couple of weekends ago and then had only one pilot at #PT25A the following weekend. So even though any deck can win any individual tournament still, the diversity among the best decks in the format is at an all-time low.
For more on this topic, go read Ross Merriam's article from earlier this week before we continue on, I'll wait. All caught up? Alright then, let's move on to the tier one decks that are the best choices to be playing in Modern week after week now.