I'm looking for songs...I guess in the intermediate-expert range, around the level of YYZ or Anesthesia, but below the level of Donna Lee. I'd prefer if it wasn't a solo but just a good bassline.

I'm into Classic Rock, Heavy Metal and Thrash Metal mainly.
maybe some Kreator. check em out

Any particular song? Do they have Guitar Pro tabs?

Oh I also forgot, I'd prefer finger players as opposed to picks.