Kuuga, that's fair--but isn't he limited by the fact that he needs an appropriate device to turn into a weapon? I.E. he needs to borrow a gun for Pegasus Bowgun
(not sure if he ever used anything else for the Bowgun).
I think Kuuga's form changes are faster than W's, based on what little I've seen of Kuuga
(and of course Kuuga in Decade). W has to switch Memory gadgets, Kuuga doesn't
(but needs a device to tunr into the appropriate weapon)
Not really sure with Psyga. I felt that the flight pack was more of a hindrance than a help when fighting on the ground. It seems pretty bulky, IMHO (yes, I watched 555
aradise Lost). Don't think Psyga had a Rider Kick or Punch, or a pistol-sized gun---or did he?