I ran a few tests also:
Size/Bytes Genre Ratio
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ORIGINAL WAV FILES
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497,822,012 Pop 100%
753,874,844 Country 100%
736,223,084 Classical 100%
443,222,684 Pop/Rock 100%
799,480,124 Metal 100%
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FLAC 1.1.3 -8
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323,240,382 Pop 64.93%
479,650,971 Country 63.62%
290,479,412 Classical 39.46%
296,422,386 Pop/Rock 66.88%
595,061,318 Metal 74.31%
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FLAC 1.1.3 -8 -b 4096
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323,032,660 Pop 64.89%
479,138,462 Country 63.56%
290,569,776 Classical 39.47%
296,176,736 Pop/Rock 66.82%
594,947,534 Metal 74.42%
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FLAC 1.1.4 alpha1_debug -8
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322,260,848 Pop 64.73%
478,567,645 Country 63.48%
287,905,316 Classical 39.11%
295,581,240 Pop/Rock 66.69%
594,101,619 Metal 74.31%
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FLAC 1.1.4 alpha1_debug -8 -b 4096
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322,054,360 Pop 64.69%
478,027,837 Country 63.41%
288,014,996 Classical 39.12%
295,330,557 Pop/Rock 66.63%
593,977,839 Metal 74.30%
Interesting to me that the only one that wasn't positively affected by the blocksize of 4096 was the Classical music. Anyway, results look promising. Glad that I haven't undertaken the 1.1.2 -> 1.1.3 yet, now I can wait and just use 1.1.4.