People responding with 'pick the other morph' are kind of missing the point. The issue is that whirling has such short range that it is not just inferior to tornado but is outright useless, at least with 6m it could almost be worth considering.
Add it to the list with Crystal Blast, Radiant Aura, Revers Slice...and so on, there are too many skills that are just outright bad choices compared to the other morph.