I'm a long-time big fan of the Hal Leonard stuff. Particularly the "play-along" series. I think the tab is accurate (at least enough for me). There are a few songs I learned with HL that were eventually taught on GT... usually I liked the GT version better. I was surprised to hear the artists have any involvement in the whole process - I would have thot that was a "publishers" thing.
I don't stress over hitting every little ghost note and incidental scrape. If I can use the tab as a guide and put together a start-to-finish rendition of a/the song - up to tempo - that's pretty satisfying. Safe to say 90% of the songs I can play (completely) I owe to Hal Leonard ( and the "Jam with" and "Ultimate Play-a-long" series of books/cd's.).
Highly recommended... CHEAP on Amazon.com