Tom vs Adam vs Lucas

[Saerwen]

Lucas for me, he covered different character aspects in his struggle to fit in on his return from Russia, coming to terms that Elizaveta had divorced him, and the darkness that seemed to lie underneath the surface, yet he could show compassion for those around him. I will completely discount series 9 as his character had a complete brain meltdown which had no correspondence with what was shown in Series 7 & 8 despite that it showed how outstandingly talented he is.
Next would be Tom then close behind would be Adam.