This time I ran an ABX on FLAC vs. OGG (q6). It appears that I could tell a difference, but got fooled a couple times. Apparently there was a 22.7% chance I guessed on them all.
foo_abx 1.3.4 report
foobar2000 v1.1.6
2013/04/13 11:52:02
File A: C:\Users\...\Desktop\12-The Menzingers-I Can't Seem To Tell.flac
File B: C:\Users\...\Desktop\12-The Menzingers-I Can't Seem To Tell.ogg
11:52:02 : Test started.
11:54:41 : 01/01 50.0%
11:56:19 : 01/02 75.0%
11:57:44 : 02/03 50.0%
11:59:55 : 03/04 31.3%
12:00:12 : 04/05 18.8%
12:01:36 : 04/06 34.4%
12:04:12 : 05/07 22.7%
12:04:12 : Test finished.
----------
Total: 5/7 (22.7%)
Whereas FLAC vs. OGG Q8 had me completely fooled. I think I found my bitrate. Thanks guys!
foo_abx 1.3.4 report
foobar2000 v1.1.6
2013/04/13 12:13:39
File A: D:\Clip+\OGG-8\Alkaline Trio-This Addiction-2010\12-Kick Rocks.ogg
File B: D:\FLAC\#-D\Alkaline Trio\2010-This Addiction\12-Alkaline Trio-Kick Rocks.flac
12:13:39 : Test started.
12:14:19 : 01/01 50.0%
12:15:57 : 02/02 25.0%
12:17:02 : 02/03 50.0%
12:18:24 : 02/04 68.8%
12:18:41 : 02/05 81.3%
12:19:40 : 02/06 89.1%
12:20:03 : 02/07 93.8%
12:20:59 : 02/08 96.5%
12:21:00 : Test finished.
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Total: 2/8 (96.5%)