Clinical guard

How good do you guys think the cheap clinical guard tests you can get on amazon are? (For pregnancy) are they sensitive? Or do they take a lot longer to detect the hormone? I’m 9DPO and wondering if one of the first response tests will be better for me to take then those. I’m not having any period signs like I normally do, I just have this weird feeling I really could be pregnant this month. I tested this morning with the CG test and it was negative. Just curious to see what the rest of you think if you have experience with these. (And yes I know 9DPO is still early to test)