I'm gonna cheat.
Favorite small set: Gotta give it up to my man Kazi. The short and unusual design aesthetic worked for him with the Matatu, and how he was more upright than everyone else.
Favotrite Canister set: I've still got my Jaller Mahri and his crab. I dunno man, just...after Jaller Inika, this felt more like Jaller, and it's just great.
Favorite Large set: Now, I could be cliche, and say Vezon and Fenrakk, but...that Boxor tho. Oldest set I still have around. Except, Nuparu has normal arms, and Black feet. Some stuff happened, but still!