What brand test should I buy?

I'm 90% sure I'm pregnant, I'm three days late for AF, super sensitive nipples, I have what I'm pretty sure was implantation bleeding three days ago, and I'm having to go pee every half hour. I want to get one of the digital clear blue tests to take tomorrow with FMU, but I've heard it needs a higher hcg level than other tests, and I had a bfn just two days ago. Would it even be possible for me to get a positive if I'm pregnant with that test, and if not what test do you recommend? I know you don't know for sure I until you test, but I'm SO sure, I will be shocked if I'm not.