It's all subjective and I hope he never plays to his full capability with them, but the guy is world class. He has everything. Can use either foot, commands the box, good passer, has pace, has height, is strong as feck, and technically very, very good.
It's interesting for sure. I've been trying to rate Van Dijk for quite some time now, and I honestly think even someone like Stefan de Vrij is not that far behind him in terms of talent. Van Dijk's much faster and marginally stronger, but De Vrij is comfortably better on the ball and while he's not that fast he reads the game very well. His main problem has been his injuries, but he seems to be in decent form again.
And then there's players like Vertonghen and Alderweireld (and maybe even Vermaelen) who I think were significantly better players than Virgil when playing in Holland, and they've also performed at a higher level in England. Seen plenty of other players like Koscielny or even Cahill reach a very respectable level too. Not to mention the whole batch of CB's at top clubs over the last couple of years, from Ramos, Pique, Chiellini, Boateng, Hummels, Godin, Bonucci to Silva or Varane, though some might have dropped in form.
Maybe I'm a bit negatively biased because of his very uninspiring performances for the Dutch national team though. He's had quite a few unconvincing performances, and I really only remember two or three decent games from him. But it might be a bit harsh to judge him so strongly considering that the whole national team went on a negative spiral worse that United under Moyes, somehow failing two qualify twice in a row. Can't really expect a relatively inexperienced centre back to take charge of the whole team and solve everything.
Even if the transfer fees will inflate more over the next years, I can't see many scenarios where this transfer will turn out to be a bargain for Liverpool. But I think they've just overtaken us in terms of goals scored (46 vs 43), their defensive problems being the obvious bottleneck. And whether he's world class or not, he's a massive upgrade on what they have.
It's also interesting to see whether he can deal with the pressure of the massive fee, even someone used to the limelight like Pogba said he's happy he doesn't have that kind of attention on him anymore.