Root need help 3g speeds


need help with 3g. I know everybody is sick and tired of 3g failing us and i need to know how people are getting super 3g speeds. I tryed everything from switching prl to using simple IP. nothing seems to work..always get 1 bar on 3g and doesn't stay on for long.I have been using 1x but the slow speeds. are annoying.. I know if I want better service I should switch but I just want to get the best out of the phone. and I know metro 3g is good because my friend has the huawei m835 with prl 3027 and its fast... so anyone please help, thank you.