Used Snubbull and Qwilfish in different playthroughs.
Qwilfish: Depended hard on TMs and Surf. Fared okay, though, in part to Minimize too.
Snubbull: Chose it for Charm. Was not that great or useful in this instance, however.
Likes Yanma. Hates the idea of dealing with its terrible level-up moves in every generation (including Generation 2).