We know Liverpool are the real deal.
One look at the current Premier League table and the progress they have made under Jurgen Klopp, particularly in the calendar year, is testament to that.
But what about Arsenal?
They go into Saturday's tea-time showdown at the Emirates on the back of 12 wins from their last 13 unbeaten matches in all competitions.
In what is Unai Emery's first season in charge, can they be considered genuine title challengers, too?
So to get the inside track on Liverpool's next opponents we spoke to Football.London's Charles Watts, who covers Arsenal home and away.
Charles gives a fascinating insight into the start of the post-Arsene Wenger era and explains why the prolific Pierre-Emerick Aubameyang is giving Emery a problem despite scoring 17 goals in 23 league games for the Gunners - and why one position in particular could decide the clash with the Reds.
And of course we also got Charles' take on those reports linking Aaron Ramsey with a free transfer move to Anfield.