Well, you said "best" so it's going to cost you: Mono or Reunion Blues.
I have experience with Mono (two bags), but the RB likewise gets universal praise for its durability and protection though I've never owned one. Bottom line is you are making some compromise with a gig bag for the purpose of utilizing features one doesn't have with a HSC. So if one is serious about protecting a fine guitar when on the move, you can't go wrong with either of these two, IMHO.
Edward