I fed this table in ff123's analyzer :

MP3-V2 MP3-V3 MPC-q5 MGX-q5.5 MGX-q5.99 MGX-q6

2.00 1.50 3.00 2.00 2.00 3.20

1.50 1.00 4.00 2.90 2.90 3.50

3.00 2.50 2.80 3.00 3.30 4.00

3.00 2.00 4.00 2.00 2.00 2.30

1.50 1.00 4.90 2.50 2.50 3.30

3.00 1.80 3.80 2.20 2.40 3.00

1.50 1.20 3.50 1.80 2.30 3.40

1.50 2.70 4.00 2.00 2.00 2.30

3.00 2.80 4.20 1.60 1.50 3.00

3.00 2.30 4.00 2.30 2.50 3.50

I chose Anova, p=0.05, which gives

FRIEDMAN version 1.24 (Jan 17, 2002) http://ff123.net/

Blocked ANOVA analysis

Number of listeners: 10

Critical significance: 0.05

Significance of data: 1.24E-08 (highly significant)

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ANOVA Table for Randomized Block Designs Using Ratings

Source of Degrees Sum of Mean

variation of Freedom squares Square F p

Total 59 45.38

Testers (blocks) 9 3.67

Codecs eval'd 5 26.01 5.20 14.92 1.24E-08

Error 45 15.69 0.35

---------------------------------------------------------------

Fisher's protected LSD for ANOVA: 0.532

Means:

MPC-q5 MGX-q6 MGX-q5.9 MP3-V2 MGX-q5.5 MP3-V3

3.82 3.15 2.34 2.30 2.23 1.88

---------------------------- p-value Matrix ---------------------------

MGX-q6 MGX-q5.9 MP3-V2 MGX-q5.5 MP3-V3

MPC-q5 0.015* 0.000* 0.000* 0.000* 0.000*

MGX-q6 0.004* 0.002* 0.001* 0.000*

MGX-q5.9 0.880 0.679 0.088

MP3-V2 0.792 0.119

MGX-q5.5 0.192

-----------------------------------------------------------------------

MPC-q5 is better than MGX-q6, MGX-q5.99, MP3-V2, MGX-q5.5, MP3-V3

MGX-q6 is better than MGX-q5.99, MP3-V2, MGX-q5.5, MP3-V3

Conclusion : if I understand properly the above, **for Guruboolez' ears and samples, **- MPC standard is the winner
- Vorbis Megamix -q6 is second
- All other are tied at third place.