Some interesting figures from http://www.synthetic-soul.co.uk/comparison/lossless/
Compression/Encoding:
Encoder Setting Compression Encode Rate
FLAC -8 65.621% 9x
WavPack -hh 64.487% 29x
TAK Normal 63.875% 40x
Monkey's Audio Normal 63.793% 39x
OptimFROG 63.386% 15x
Compression/Decoding:
Encoder Setting Compression Decode Rate
FLAC -8 65.621% 78x
Monkey's Audio Fast 64.914% 46x
WavPack -hh 64.487% 47x
TAK Normal 63.875% 83x
Speed:
Encoder Setting Compression Encode Rate Decode Rate
TAK Turbo 64.929% 77x 85x
FLAC -0 70.744% 73x 79x
WavPack -f 66.741% 56x 73x
Monkey's Audio Fast 64.914% 50x 46x