>>6629879i'd say Tigerzord. The rest all have issues but the Tigerzord has no glaring flaws.
>MegazordIt's just the $25 toy from 2010 with better paint. stickers, and die-cast bits slapped on.
>DragonzordHe's loaded with way too much die-cast, to the point the Megazord can't support it without it's knees buckling. They also didn't give the heavy die-cast feet any sort of ratchet/locking mechanism for Mega Dragonzord/Ultrazord mode, so they flop down if breathed on. If you don't care about the transformations he's pretty good in standalone mode, though it pisses me off that the Fighting Mode face is visible if his mouth is open when even the kids toy from 93 was engineered to hide it.
>Thunder MegazordAnother case of too much die-cast. The initial release leaned forward due to being too top heavy, but Bandai changed the thigh pieces in following runs to combat this and sent replacement parts to those who requested them. They made some other small improvements to the V2 as well.
>Ninja MegazordThe part of the Bear Zord that the arms attach to doesn't lock into place tight enough to keep them from moving when moving the arms. This can be especially problematic when the Falconzord is combined, as it will cause the Falcon to come crashing down, which is also due to the combination method for the Falcon being very flimsy.
>Titanus, FalconzordNot much to say about them. They're fine. They do what they're supposed to do, and are marked improvements over the originals, but neither is very exciting without the Megazord combinations. My only complaints about them is the die-cast yet again because it negatively impacts the transformations. The Titanus parts that connect to the Megazord are die-cast, and the Megazord already can't support the weight of the Dragonzord. And with the flimsy connection of the Falconzord to the Ninja Megazord it doesn't help that the Falcon has heavy die-cast feet.