I´ll try: he didn´t buy the most expensive MDs. What that means I have no idea. Maybe he wasn´t interested that much in haptic quality. Or he simply didn´t care.
He´s an orderly person, titling his MDs. The music he likes... well, he does have taste. Blur, Ella Fitzgerald, Daft Punk and Faithless. Clubmusic, jazz, alternative rock. On occasion he experiments with different styles like Dido or Elvis Costello... or Boyzone (!). There´s also an MD especially made for cooking. Either for a girlfriend or for himself...
Some MDs are not titled by him but by another person, judging from differing styles of writing on several MDs. Which could mean that he convinced someone else to invest into MD or that he was convinced.
I cannot see very much I´m afraid, except stating the obvious.