I know from experience with ripping music, that if you want quaity you need a format that isn't compressed (MP3 is a compressed format, a bit like JPEG/JPG images) you also need a higher bit rate.
Of course if you want music with a higher bit rate you need to be willing to sacrafice disc space.
As the files can be quiet large.
Another option is to import using a lossless format but these files are gigantuous.
Here are some instructions on increasing your file format for importing and the bit rate.Using Windows Media Player 11
1. Launch WMP
2. Under the Rip
tab select the format you would like. (Note: If you really want to use MP3
when you select your bit rate select 320Kbps because it is the best possible quality. Also if you want a lossless format select Windows Media Audio Lossless
3. If you have selected MP3 or WMA select your bit rate. For MP3 the best quality is 320kbps and for WMA its 192Kbps.
4. Import your musicUsing iTunes
1. Open iTunes
2. Select Edit
3. Click the Advanced
tab followed by the Importing
4. Next to Import Using
click the drop down menu and select MP3 or ACC (note: if you select Apple Lossless Encoder there is no need to continue to step 5)
5. Next to Setting
and increase the bit rate to 320kbps.
6. Click Ok.
7. Now you can import excellent quality music.
Hope these helped