It is as they say, the weapons and armour given on walkthrough guides are not infact the best sets you can get, there are whole sets of non-unique items out there that only start dropping when you've reached lvl 80 (either that or reached max xp) and they can be ridiculously powerful
so powerful infact that it is now at the point that Mithaniel Marr seems just like another ordinary pawn on any of the planes!
The only thing is, these items have annoyingly low drop-rates, so you really need to play the game for a very, very long time to gat most of them
