What the heck!

So I got a clearly positive clearblue standard read opk test (test line darker than control) and I've also been taking the first response digital because honestly, I don't like testing with things I can't see (I know, big $$$$) and it said "no!" Whats this about???? I used Clearblue digital last month and didn't really like them or trust them so I got First Response to try those but now I'm starting to think I just can't trust digital test! Thoughts, experiences?