"Six and half a dozen other" is a phrase that means there is no difference between two options or choices. However, there are several synonyms for this phrase that can be used to convey the same meaning. One of them is "six of one, half a dozen of the other." Another synonym for this phrase is "tomato, tomato" or "potato, potato" which is often used to indicate that two words or phrases have the same meaning. "Same difference" is also another synonym that can be used to express that two options are equally good or bad. Ultimately, these phrases can be used to highlight that there is no clear advantage or disadvantage between multiple options.