Here is a pdf that I created comparing the compression ratios between flac, wavpack, and tak formats. As of now its between 2 sources (both different genres). I tested the ratio between the source, the wav, flac q5/q8, wavpack normal/max, tak p3/p4 . so far its a 3.6% smaller size file on average (between original flac and tak p3 tests). I will continue to test more sources and more genres, and post updated pdfs.
I understand that there are probably other tests that are more detailed and more efficient than mine. BUT: I would like to post my own tests in comparisons of others.