I would say it depends on where you are, as some brands are not available in every country. IMO start backwards and find out which places near you offer canister refills or generic exchanges, and pick a compatible make. There’s also adapters that will let you plug in generic CO2 tanks into soda makers. Again, find local distributors of clean CO2, and you’ll have bigger refills for a fraction of the cost.
I would say it depends on where you are, as some brands are not available in every country. IMO start backwards and find out which places near you offer canister refills or generic exchanges, and pick a compatible make. There’s also adapters that will let you plug in generic CO2 tanks into soda makers. Again, find local distributors of clean CO2, and you’ll have bigger refills for a fraction of the cost.