FLAC or AIFF? your choice for importing to Itunes.

If you are planning to use USB, then FLAC has the worst imact on SQ of the losless formats. AIFF is not as good as .wav, but a lot better than FLAC.

I will not argue about this. Yes, FLAC is bit-perfect when data compares are done, but it compromises SQ when played back real-time. There have been a number of studies including the one in TAS that support this.

Steve N.
Empirical Audio

Dtc - some of their findings, not all, are consistent with what I have heard myself. I recommend to avoid FLAC if you are using USB or Firewire.

Steve N.
Empirical Audio