I have the Line Magnetic 518IA which is the predecessor of the 845IA , same tube compliment, I believe the 845IA may have some parts upgrades. Based upon my experience with rolling in NOS 6L6GCs, 12ax7s and 5ARA4 in the 518IA I would expect that the sound of the 845IA will be positively impacted by doing the same. I won’t say that the 518IA sounds better than the other amps on your list, nor make the claim that it can’t be beat as I have not heard the others. I use the 518IA to drive Daedalus Audio Argos V2s.
Good luck with whatever you choose
Good luck with whatever you choose