Hmm, I checked this link http://www.herbertweixelbaum.com/comparison.htm that thebitman gave to me.
For my ear the best ones were: 1. DMG with the Pro Sound mod (Nuff said.) 2. GBA (Not perfect but I still liked the sound pretty much.)
3. SD lite (Pretty much same opinion than with GBA. I was actually surprised!)
And the worst ones: 1. GBA SP (Silent parts sounded like my tinnitus would have gone louder.. Sounded little bit like a cricket too.) 2. GBC (Whistling during the song.) 3. Pocket or Micro (Just didn't like the sound that much. And Pocket had those "whistles" too.)
Now when im thinking this whole thing. Is the GBA really that bad after all? It's just like this, GBA's are easy to get and they're pretty cheap too. But on the other hand I haven't heard even one good thing about them.. Still, I don't want to make these hasty "assumptions" or decisions because of the one comparison. Maybe I should just get a GBA and get started and later if I find affordable DMG's, I could get one of those.