First impressions of true hd movie is a noticable improvement, particularly in the surround sound channels.
This mirrors my initial reaction. I've yet to do A/B, so my comments are subjective, but in the sequences I've listened to I feel that the surrounds have become much more coherent, particularly with panning between speakers and especially rear to front transitions sound more solid and smooth.
The low bass region also sounds more powerful and full.
I now need to find two copies of the same film that I can play simultaneously on different players, one with lossless and one lossy, so I can then flip between them and make more accurate comparisons.
Mark