Audio Note CD 2.1 - any takes?

I recently auditioned this cd player with the Audio Note Oto integrated amp. I was very, very impressed. Being new to the tube word though, I haven't had the opportunity to make many comparisons. I've read that the Audio Aero Prima should be a price point competitor and I'm also interested in the possiblitiy of a tube modified Sony SACD player.

What do the gurus sayeth?