When Choice tested, 4 out of 6 didn't meet their SPF claims. You can see who they tested in the smh article.
I like the Cancer Council Active (grey one). It's not greasy/thick feeling, and actually dries on your skin. Mainly use for outdoor activities/sports.
And while it's a bit more expensive than budget sunscreens, it's a lot less than a lot of sunscreens. Check out the prices on some of those she tested. Holy cost of living crisis, Batman!
And I feel like I'm helping a bit by my money going to the Cancer Council.