Just stick to the Italian game until you reach intermediate level
Openings for 600 elo

Yes, very good. Especially for tactics and playing for a win with black. Dragon, Sveshnikov or Najdorf are the best.

I usually play queen's gambit, sometimes Italian. I'm thinking about switching to Vienna or Scotch. What should I choose?
I recommend the Queen's gambit, Italian, Vienna and Scotch.
Seriously, it does not matter. At all.
Just pick any of those. Or play all of them. It does not matter. The only thing that matters is to not blunder pieces away.

Hey there
You guys see my elo and I wanted to ask if my opening is good for it.
I usually play queen's gambit, sometimes Italian. I'm thinking about switching to Vienna or Scotch. What should I choose?
Stick to ONE of the above. Doesn't matter which.
colecollector, bongcloud is absolutely too advanced and too complex opening for me. it's almost as good as Gambit Sandomierski

it depends, are you a passive or aggressive player? You cant really base an opening on rating. if you are more positional/passive, d4 openings are good. if you are more aggressive, e4 openings would probably be best.
Hey there
You guys see my elo and I wanted to ask if my opening is good for it.
I usually play queen's gambit, sometimes Italian. I'm thinking about switching to Vienna or Scotch. What should I choose?