Yes, that's great if you have a real friends, I have 4 best friends and many more good friends, but I can 100 percent trust only to these four ones 
Same for me. I trust all of them equally but my relationship with one is just different from the other two. I'm not saying they are snakes but I just happen to feel more comfortable with the other one and trust her more because we've been to and through a lot of crap together.