tag you music

When it comes to tagging and organizing your music collection (.....often, huge collection), which sites do you source as find accurate track info if Itunes doesn't list the song/album ?

I've tried Dsicogs, but have had issues, with artists are not spelled always spelled correctly. For example :

Sonar Methods Echoing Waves (Robert Nickson Remix)

Tuneup Media software flags this as a "Match" but in the list it says "Nichson" not "Nickson"


I know its not perfect, but i would have though the company who add the artists to Grace-notes knows what they are doing.

So, in this case. which is right ? Discogs, or Tune up? Or must i go through other sources to see different spellings ?

Anyone had this issue?