Aw, sorry it was a BFN with the good tests, too. I plan on doing what you're doing -- testing with one each until the witch shows, just in case! I think it would be an interesting way to test the performance of the tests side-by-side, too, and the sensitivity (should I happen to get my bfp this month).
I keep flip flopping over whether I'm sure I'm out, or if I think I may still be in. The headache, the SHOOTING pains in my boobs, a little nausea (probably from the headache), they're giving me hope in a weird "omfg I feel miserable" way.
I will hold out until at least Monday! I WILL.