Favorites: G2 and Zoro's Ashura.
Least favorites: G5 and Sanji's exoskeleton.
Holy shit, it's the same for me too !!
Exactly the same lol.
G2 and Asura are my favs, their intro was hype AF.
G2 embodied Luffy's creativity and mastery of his DF - using the rubber DF's elastic property to heighten his blood flow to increase speed and physical power, further enhancing speed by imitating soru. This was peak Luffy. Easily the best powerup in the series, iconic stuff.
Asura being the physical manifestation of Zoro's unyielding will power and pride that refuses to lose, allowing him to access a style of swordsmanship - 9 sword style, is the perfect fit for Zoro and his dream - dream to be so strong that his power will be reknown in heavens itself. 3 sword style was great in itself since everyone is 1/2 sword style, but 9 sword style is an unparalleled technique, a fitting powerup for even Zoro's endgame
I would add that DJ was also a pretty good powerup in itself. My 3rd favourite after G2 and Asura.
Very well fitting for Sanji, as a representative for his burning feelings. This was before the whole lineage nonsense with Sanji, Sanji was actually feeling the heat himself. He spinned so hard that he set his feet on fire, while the pain from the burning heat simply paled in comparison to the burning feelings in his heart
**************
G5 retcon ruined Luffy and the story itself for me. Spitting on the narrative his DF being a mid paramecia that Luffy made strong through sheer hard work and creativity. Nah, that's just part and parcel of the God zoan DF that represents the chosen one Jesus. Barf.
Sanji's exoskeleton represents mutation that Sanji's mother was trying to prevent, she killed herself for that and he somehow still got it. The explanation that putting on a suit somehow activated his dormant genes is ridiculous.
I would much rather Sanji have the raid suit. Raid suit effectively represented his family trying to bury the hatcet and trying to amend relations with Sanji, in their own way, and in the process helping Sanji with minor dream after all blue (i.e invisibility).