What pregnancy test do you recommend??

Hi guys! I'm 6 days late and getting very anxious! I've taken 2 tests so far and both were negative. I took First Response 6 Days Sooner with the pink dye. I just recently learned that different tests can only pick up certain HCG levels. Like the digital ones only pick up high HCG, so that's probably not a good choice for me. I've even seen people say the dollar store tests are better than First Response! Please let me know what I should buy! Any advice will help!