The whole series ends without the full closure that one might expect; purportedly it is for the audience to determine as they may wish from little hints. While it led to interesting discussion with my partner, it could be frustrating for many.
However, a number of conflicts are resolved, and these last nine episodes are quite as enthralling as the previous ones. Note nine, nor the usual twelve in other series.
The Sopranos is one of only several very long series I have watched in its entirety. For me, it would certainly vie for top place!