Who is the best battler? - Dunno, probably tied.
Who has the dashing looks? - Gardevoir, duh.
Who is the most satisfactory early psychic type? - Gardevoir. Easier to get, easier to raise, no trading required.
Who represents better the sex they seem to symbolize? - Gardevoir represents a yamata nadeshiko (sp?) style better then Alakazam's ... German doctor?
Who is the best, overall? - Gardevoir.
BONUS QUESTION: Is there a spoon? - Gardevoir doesn't need cooking utensils. They have a knife inbuilt in their chest~!