The first ([ˈpaʊɤ]) is the best, even if [p] is not properly aspired and the triphthong is too high, then I hear: ˈpauʔɤ ˈphau ˈphau ˈphaau I think you should be producing [ˈphaoɐ], "aspired" p, middle [o] and low [ɐ].

pauə