Bloodborne. No contest. One of my top games of all times. Love most everything about it. It'd be quicker to name the flaws over the positives. The performance could be better. Grinding for blood vials sucks severely. The chalice dungeons are pretty shit, though the unique enemies and bosses are welcome. The amount of builds you can make are way more limited than the other Soulsian games. And finally the blood gem system. It's a cool idea in concept, but unless you spend time grinding for gems in the chalice dungeons (fucking kill me instead), you'll end up with only a couple strong weapons and some will just not reach their full potential period. Not insignificant flaws, but everything around them is fantastic enough that they really aren't so bad while playing. Except the blood vial grinding. That can just stop you dead in your tracks and make you waste so much time.
Otherwise, I love all their other Soulsian games (I like it, but I think Elden Ring is overrated). I haven't really played many of their other games, except dabbling in some Armored Core every generation and Chromehounds. Chromehounds was flawed, but a blast online.