Brother, the Islamic prayer is fundamentally the same among the different madhabs and they are equally valid. There are subtle differences, some of which that I am aware of 1) saying 'Bismillah, ar-Rahmani ar-Raheem' out loud at the beginning of audible rakat - or not, 2) position of hands while standing over chest - or below the navel, 3) raising hands before going into or returning from ruku and upon standing after 2nd rakat - or not, 4) positioning of feet while sitting, and 5) how much one moves his right index finger during the tashahud. My personal belief is that the Shafi'i way of salah more closely agrees with different hadith I am aware of such as in Bukhari. However, these differences are small and should not be points of disagreement between Muslims.