AIFF or FLAC?

I use a Mac and Apple Lossless because it integrates with Itunes.

Early on with Itunes I heard a difference between lossless and AIFF but on Audirvana I cant via casual listening. I suspect the reason is Audirvana decompresses into memory prior to playback so whatever was making AIFF sound better is a non issue.

Thanks
Bill

AIFF is not compressed. I figure the less the computer has to do (I use Audirvana) like decompress to play the better. Even if I can't hear a difference.

Programs like dbPoweramp will let you select the degree to which FLAC files are compressed and there is also a setting to not compress your FLAC files at all.

I would just try both options on whatever you are going to be using to see if you can tell a difference in sound before going through all the work of ripping or changing format. Whether or not there is a difference in sound seems to be very subjective based on one's software and hardware.