Nice. I like all five of your figures, but if I had to pick a favorite of those, I’d say Rayquaza. 
And I personally only own figures of my top 1 favorite Pokémon: Seviper. I collect everything non-TCG for it, and trying to complete all figures for Seviper is my favorite part of that non-TCG collection. Currently only missing three metal collection figure colors, which are almost impossible to find for gen 3 Pokémon. 
Here a picture of the current state of my figure glass cabinet:
Greetz,
Quuador