4 has extremely good mechanics, even if the storyline was kinda lacking due to them basically having to cut half the game because of management's demands. It's telling that DMC 4 is still played in various "style" competitions - there's no game that's deeper mechanically and still fun to watch.
The reboot had terrible unlikeable characters, bad mechanics mixed with good ones (colored enemies are BS in a game like this, demon evade is OP, but parrying feels nice, I guess), and the plot was even less entertaining than 4.