I'm quite happy with what I have, but at times I get this itch to improve, especially knowing that it can sound a lot more "alive" than it does in my setup. I've already said it in some other thread on here: it seems as though it's lacking in dynamics. I have for instance a bootleg of Richard Thompson at Grand Targhee Bluegrass Festival, which is really amazing. At the store, Touch connected through SPDIF, playing at (subjectively, not measured) the same level, I could really feel each time he hits the strings on his guitar. Same hardware, approximately the same listening distance at home, I can't. It's better when I connect the Touch through analog though ...