Though type advantages and weaknesses do play a part in the card game, the cards in the Squirtle & Friends deck outclasses anything in the other two by far
At $38$55, it's at the affordable end of the Eeveelution SIRs, which means it's also one of the most accessible for new collectors
This is just what you want to be doing
Ideally, you would only use a 1-1-1 line of this Pokemon family, in a water type deck, you would keep this line on the bench, using Starmie's Ability, and then if the opponent had Pokemon BREAK in play you would move Starmie BREAK to the active Pokemon spot and use Break Star until all of those Pokemon are defeated, I believe all BREAK cards have less than 200 HP, so it should be a multiple knock out situation with Starmie BREAK's move
non-creature source since creatures are both more fragile and easier to recur