If you remove your nostalgia lenses, if we check the best gameplay, story and balance, then these are the best rpgs ever created.
So why not Baldurs Gate 2 instead of Origins, you might ask? Well, BG2 had this annoying mechanic that you had to rest to recharge your spells, which was immensely detracting from the gameplay fun factor. Origins was basically BG2 successor, but had much better gameplay due to rechargable spells.
In turn, Divinity 2 has the best rpg XCOM combat, where you must plan carefully your actions and use the environment for a tactical advantage. Original Sin has a better a story and gameplay in my opinion, but Origins was in real time, so it had a better action fluidity, therefore they kinda balance each other.
Both games have immensely satisfying class leveling and party based RPG gameplay.
There is just no RPG gameplay as fun as these two games provide. This is why i consider these two games the best modern rpgs ever made.
Perhaps some of your favorite rpgs might have a better story or some other elements, but when it comes down to tactical rpg gameplay, Orgins and Original Sin 2 trumple their competition.