EAC is the only cd ripper and LAME the only mp3 encoder you should use (possibly 3.90alpha verisons

). Others sux. In speed, in quality, in stability... they sux.
Here the optimal settings for mp3 encoding using lame (you can enter this string in compression options from eac if you want):
for internet sharing or normal purposes (recommended):
-b 192 -m s -q 0 --lowpass 19.5
for archival quality:
-b 256 -m s -q 0 --lowpass 19.5
If you find that your cd has a better quality than the "archival" mp3, then you're ripping with a program that is not eac or using eac with wrong settings.
If you can't hear differences between eac+lame and other programs, or if you don't hear differences between 128 and 196, then you have poor speakers, reader, ears (or you're listening to tunz tunz dance "music")