The phrase "six one and half a dozen other" is often used to describe two things that are essentially the same or equal. However, there are several synonyms that one could use to convey this idea. One such phrase is "six of one, half a dozen of the other," which is a more concise version of the original. Another option is "two sides of the same coin," which suggests that the two things are intimately connected and cannot really be separated. A third alternative is "much ado about nothing," which implies that the differences between the two things are insignificant or unimportant. Ultimately, the choice of synonym will depend on the context and tone of the conversation.