I wouldn’t want to use an LG drive for audio ripping, btw. The one in my laptop, a GSA-4080N, has a read offset of 667 samples, which is fairly large, and if you try to do offset correction it reports read errors at the end of the disc rather than silently returning zeros like most drives do. It’s also rather slow at DAE.
According to the table of offsets on the AccurateRip site, the GH20 and GSA-H44 drives have a 667-sample offset as well, so I’d imagine they probably behave the same way. I’ll stick with my LH-20A1S and its six-sample offset.
(Actually, my LH-20A1S broke recently – still reads fine, but burns bad DVDs – and it’s out of warranty, so I’m about to buy another one of the same model, as well as a Samsung SH-S203B to avoid having a monoculture of nothing but Lite-On drives.)
Regarding FLAC, I do it not so much for space savings, but because it supports embedding a cuesheet, so I can make a nice clean CD backup with a single big FLAC file containing all the tracks and the boundaries between them. (That’s just for archival; I make Vorbis files for actually listening to.)