Quick survey.... When you import audio into a video project, what format(s) do you prefer?
Typical project: eg. wedding video, corporate presentation, etc.
Audio content: eg. music, voice, sound FX, etc.
File type: eg. WAV / AIF / MP3, etc.
Sample rate: eg. 44.1khz, 48khz, etc.
Channels: eg. Mono / Stereo / Surround, etc.
Resolution: eg. 8-bit, 16-bit, etc.
Obviously, this varies hugely from project to project. So, consider the question for the most regular type of video work you do - a 'typical' project.