Sounds like you've answered the question yourself. If you can't hear much of a difference yourself, why take up more space. For me it's a no-brainer, I hear a difference, so I choose lossless. You may want to try comparing more than just one file that way before making a choice. Also, try the same test with headphones or earbuds (assuming that you may use one or both at some time). Otherwise, go with what your own ears tell you, not someone elses.
Marco
Marco