Grrr, why isn't Comashipping an opinion?!
Well, I guess I voted Pokeshipping, since it is my Ash/girl otp (Advance or Negai aren't bad either, but I rather see Advance more like one-sided crush to teacher and Negai is lagging of hints which makes me see them only as friends atm) and Misty was so crushing to Ash.
But Ash/Paul is my most beloved shipping and not just because they "look good together" or because I love both characters. I like their relationship's development and dynamics. And I'm pretty sure no matter how hard Paul tried he just couldn't picture Ash as a loser anymore after hearing he had won the Battle Frontier and beaten Brandon. BD