Best HCG test to use!?

So this is my first time actually trying to conceive. With my first, I thought I was going to be getting my AF the next week but me and my friend took a first response 6 days sooner and I ended up being 4 weeks pregnant (confirmed by a doctor the next day) so it was more of "let's just see if you're pregnant" because my friend was 6 months pregnant at the time...I'm just wondering what the best test is to detect early pregnancy if it's not the first response 6 days sooner cause that brand and the dollar store brand are the ones I've always used.