I have been thoroughly enjoying all of the Incarnon weapons from the original 5 to all the adaptors for those who have unlocked Steel Path.
Personally, I am so happy that Lex is good now since it's one of my personal favorites along with the Boltor and Strun, just because I finally have a decent riven.
Laetum is probably my favorite or second favorite secondaries, very funny with the Glock skin too
Skana and dual toxocyst. The inacarnon Prisma skana is very funny with 2 umbra mods and 198% crit chance, pair it with blood rush and gladiator mods and you've got red crits for days.
The dual toxocyst incarnon is just the strongest weapon I have... Melts everything from disruption carriers to archons (a bit of a stretch here).
Despair incarnon is close to being one of my favorites, but it's just not as good as the dual toxocyst. Still kinda funny though.