hmm it's Because I've been searching around and one post says the 2x in CF are better than 1 6870 and another states otherwise so im lost in what i should get for the best results
Benchmarkers will often tell you that the 5770's will win, but they don't take into consideration that crossfire has drawbacks. They require a board that can handle it, and a beafer PSU to function. They run hotter and make more noise. Not all games support CF even if most do. Sometimes the low end FPS is a lot lower, and that matters more than the average or high end. There are a few other problems with CF too.
I don't think it's a good idea to CF budget cards when you can get a single card of similar power. CF/SLI makes the most sense when you want more power than a single card can give.