Can you tell me why you prefer CD? What is it that you're hearing, or not?
I've been able, occasionally, to detect differences from my CDs vs. Lossless files. Not always, not all files, no real reason or pattern I can detect, which is interesting at best and frustrating at worst. But generally I can only detect 'different,' not necessarily that one or the other is actually 'better.' I might prefer one over the other, depending upon the track and the file, but it's not an across-the-board indictment of one over the other.
I'm not blessed with audiophile language to describe particularly accurately what I'm hearing (when there is a difference), but it's something around the space surrounding bass notes, and/or the attack of these same notes. The generalization would be verrrry slightly more of both (more space, sharper attack), but again, this is not always a net benefit to my ears by any stretch of the imagination. I know should be able to describe what's being sacrificed when I hear these changes that would make me prefer 'less space and less crisp attack,' but I can't.
I've only got that it sometimes sounds different, and different is not always better.
So any specific language you can share about what it is that you're hearing differently off disk vs. from your files would be very interesting to me. Thanks!