Do you have a brand you like? I'm thinking of getting a countertop device soon and they sell a "re-alkalizes it" version but I don't know if that's "enough" and

Do you have a brand you like? I'm thinking of getting a countertop device soon and they sell a "re-alkalizes it" version but I don't know if that's "enough" and of the right type and I'd like to cover my bases in case it's not.