I've usually liked most of them, except for three four (Squirtle, Totodile, Treecko and Piplup).
Sapphire 1: Torchic (for no apparent reason except that I wanted a Blaziken with Fly)
Sapphire 1: Mudkip (because it seemed like a fun Pokémon (god, so lame explanation))
Emerald: Mudkip (because I am in love with Marshtomp ^____^)
Leaf Green 1: Bulbasaur (because I am in love with Ivysaur ^____^)
Leaf Green 2: Charmander (because when I played LG 1 I thought Venasaur looked awful)
Hana, signing out~