You really need to decide what sound signature you are after. The miracle and the Heirs are like on the complete opposite of eachother. The Heir is thick, warm, euphoric, non-fatiguing. Pleasant to listen to. Spacious sounding.
The Miracles are thin, airy, bright, neutral. More detail oriented. Very different sounds. If you like both sound signatures then not so much of a problem but if you don't like a bright sound the miracles will not be for you. If you don't like a thick and warm sound the Heirs won't be for you.
i guess i like something that is more neutral, not too bright, not too warm or bassy, something with more details and not so harsh, not fatiguing :)