Yeah, I would just buy a stove that uses the canisters you want.
Bear in mind that the reason the dumpy canisters are much more expensive is they’re filled with propane-butane mix which burns much better at low temperature/pressure (high altitude). The pure butane canisters are fine most of the time depending on what you’re doing, but expect that if you leave them outside/in a car over a chilly night, they’re going to struggle to maintain pressure, particularly once they’re not full.
I have a tiny adapter for refilling dumpy canisters with cheaper pure butane for use with my ultralight stove in warmer conditions, saving the propane for winter.