Here is my test result using my plastic (as opposed to golden) ears .
ABC/HR Version 0.9b, 30 August 2002
Testname: Polonaise 3.90.3 v 3.95.1 - ABR128
1L = C:\My Music\lab\Polonaise\Polonaise-ABR128-3.95.1.wav
2L = C:\My Music\lab\Polonaise\Polonaise-ABR128-3.90.3.wav
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General Comments:
3.90.3 vs 3.95.1 (ABR 128kbps mode = alt-preset 128)
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1L File: C:\My Music\lab\Polonaise\Polonaise-ABR128-3.95.1.wav
1L Rating: 3.7
1L Comment: After around 15.5 sec, noticeable distortion is detected.
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2L File: C:\My Music\lab\Polonaise\Polonaise-ABR128-3.90.3.wav
2L Rating: 4.0
2L Comment: Distortion is still noticeable, but clearly better than the other encode.
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ABX Results:
Original vs C:\My Music\lab\Polonaise\Polonaise-ABR128-3.95.1.wav
15 out of 17, pval = 0.001
Original vs C:\My Music\lab\Polonaise\Polonaise-ABR128-3.90.3.wav
13 out of 14, pval < 0.001