Way to go Nik.
You have been the most adventurous among us and the first to own the newest, bestest and expensivest headphone gear.
Congratulations on your purchase of both the 010s.
I take the risk here to venture a guess that the 010 (the headphone) and the Linn CD12 form a partnership that portrays openess. I always had this feeling that Linn CD players sound open and binaural-like over headphones, and this coupled with the 010's treble openess*, may result in the big, open sound that you have fallen in love with.
(*note: the description "010's treble openess" comes from reading the posts here in this thread and the NY Qualia Meet thread-- I don't have firsthand experience of the Qualia 010.)
It is curious to observe that the two big British names (Naim and Linn) produce CD players that are polar opposites in soundstage portrayal when heard over headphones. The Naim CD5 that I auditioned tended to be "headstagey"; the Linn Ikemi that I later auditioned tended to be "soundstagey" (both auditioned over my T2 + Omega II).
The Naim tended to produce images that "stuck to the head". Imaging was good, separation between images was fantastic, roundness of images was surprising and truly wierd -- and you are very conscious of all the golf-ball and tennis-ball images located in precise positions around the head, close to the scalp, almost like as if you could pluck these sonic balls individually from the air in the vicinity of your head. Even hall reverberation becomes "balled-up" into sonic balls, can you imagine that! Whereas the Linn one was rather binaural-like, I lost awareness of the relativity of the images to my scalp and I heard the largeness of the soundstage -- more binaural-like, in other words. Both portrayals have their charms, and I am a fan of both.
I thought I'd mention the Naim-Linn contrast just to place in context my guess about the Linn CD12 being possibly a compatible CD player for the 010. Pairing the 010 with a "headstagey" CD player would, I venture to guess, result in a potentially fatiguing sound, what with a lively treble from the 010 and the rounded sonic balls so well formed, so near the head.
I may even venture a guess that "headstagey" CD players will sound better with the Sony R10, whilst soundstagey CD players will sound better with the Sony 010. But please take this with a grain of salt-- these are just conjectures on my part, not having auditioned the 010 myself and not being familiar with the R10.
Btw, this really is a runaway thread in terms of view counts. 18,000+ and counting! Perhaps the only other one that had more view counts was the "Post a Pic of Your Rig" thread?