I upgraded from the Reference MM2 to the XL Gen5. The improvement was considerable and worth the cost. Cost being comparable I would lean to the Super Gen5. For the MM2 series I found the Ultra was not a significant improvement over the Super and I had to go up to the Reference level to get a meaningful improvement.
I would not waste any time choosing between so many models w/in the Transparent stable. If you want the very best, choose the OPUS cabling. Otherwise, choose the Reference XL cabling. You will be rewarded. You will not be disappointed. Keep me posted & Happy Listening!
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