...Ohhhh...This is a tough question...my top choices...
1. Charmander/Charizard-Strong, and good for transportation.
2. Umbreon-Tough, And one of my favorites!
3. Arcanine-Loyal, and Cute, I could ride on it!!!
4. Lucario-Loyal, and can sense aura!
5. Haha! Arceus! The creator of Pokemon!! I could have any Pokemon if I had an Arceus!!! *Insane Laugh*