I mean if you list the ones that you've liked I can try and recommend the remainder that you might enjoy. Battle for the Abyss is the only really dog shit terrible book imo. Mechanicum is just kind of eh and outta left field. Lot of folks don't like Legion and I hated it on the first pass. Actually kind of like it now though. The Cabal is all around retarded but I like John. Flight is kind of weak. Dark Angels novels are kind of ?? although I do like the first book ending aside and really liked Zahariel as a character. Nemesis was kind of just who gives a shit about this, same with Pythos. Angel Exterminatus wasn't to my taste Perturabo aside. Outcast Dead is another self contained none of this matters but we need to introduce some minor characters novel. Vulkan Lives wasn't to my taste. Deathfire was better but is still a novellas worth of story in a novel sized package. All three or so of the books that aren't named in this post are just okay. They tell a story worth telling but aren't remarkable. Shit happens and the story progresses can't complain.
In no particular order First Heretic, Fulgrim, opening trilogy, Betrayer, Fear to Tread, Vengeful Spirit(not sold on the new plot points but enjoyed the book), Scars, A Thousand Sons, and Prospero Burns would be my own "short list" as of now. Burns doesn't really belong due to the plot being... but I just love how it handles the Space Wolves and I enjoy the outsiders perspective narrative. Abnett is quite good at driving home just how post human the astartes are in that exact manner. The novels without much human involvement kind of... forget that space marines are absolute freaks of nature and that the Primarchs can obliterate the strongest of them with almost effortless disdain if they so choose.
In no particular order First Heretic, Fulgrim, opening trilogy, Betrayer, Fear to Tread, Vengeful Spirit(not sold on the new plot points but enjoyed the book), Scars, A Thousand Sons, and Prospero Burns would be my own "short list" as of now. Burns doesn't really belong due to the plot being... but I just love how it handles the Space Wolves and I enjoy the outsiders perspective narrative. Abnett is quite good at driving home just how post human the astartes are in that exact manner. The novels without much human involvement kind of... forget that space marines are absolute freaks of nature and that the Primarchs can obliterate the strongest of them with almost effortless disdain if they so choose.
Fulgrim strangling a god damn Avatar with his bare hands anyone? The dude is the effete prissy one ffs.