I like the Dutch defense although in my opinion the most flexible is the kings indian but if youre trying to catch people off guard use the benoni or queens gambit accepted
Best response to 1.d4
There's no "best defense, if your new try d5, if you feel like you have a good grasp of the basics I recommend king's indian defense (Nf6, b3, Bb2, O-O)
I like the Englund gambit, London players sometimes blunder their bishop on the second move. The gambit generally takes d4 players out of their comfort zone.

I like the benko gambit if they play into the benoni, not the best according to engines but it's usually a fun game at my level of play.

I like the Dutch and Indian systems. I absolutely never play the Englund; being a d4 player myself, I see what poor positions my opponents get into after playing it.

I like the Englund gambit, London players sometimes blunder their bishop on the second move. The gambit generally takes d4 players out of their comfort zone.
Seriously if you count on your opponents being surprised with the Englund Gambit more often than not then good luck getting better at chess.

Depends what level you are. Don’t study openings too much if you aren’t right level. I don’t really either.

I like the benko gambit if they play into the benoni, not the best according to engines but it's usually a fun game at my level of play.
honestly, I have played D4 for the past few years, and I definitely agree. from my personal experience, I would say that the Benko gambit and the Benoni are the most annoying. Although, the Budapest gambit is also a very solid option.
Hey guys, what do you think is the best defense against 1.d4? My opinion in the Semi-Slav but you guys can leave your own opinion down here! Eager to see your thoughts.