it is six of one (and) half a dozen of the other

/ɪts sˈɪks ɒv wˈɒn and hˈɑːf ɐ dˈʌzən ɒvðɪ ˈʌðə/

/ɪts sˈɪks ʌv wˈʌn ænd hˈæf ɐ dˈʌzən ʌvðɪ ˈʌðɚ/

used to say that both options or situations are equal and that none is better or worse than the other