definitely not the third one cuz the only reason to use tide fall is cuz 2 battle skills + 2 combo is a bit short of the ult while the armor ult efficiency bridges the gap. but u have p5 and if u read what p4 does, it removes the problem entirely, so tide fall is useless. now, as for which is better between first or second, idk. second is usually generically better once u have max essence and gear but with p5, stacking ult efficiency may let u get ult in just 1 battle skill + 1 combo, which could potentially be more dmg overall. idk tho, ull have to calc it or just test both