I agree, this arc is as good as the show has been in a LONG time and maybe ever. The cinematography alone is outstanding - some of these shots! - but finally, the story. The story is great. Now are getting into the reality of what it means to be a clone. You are a product of a society that values only itself. Not life. If it did, the Republic would find the manufacture of living beings for the sole purpose of war disgusting. The clones have never questioned this - until now. Rex specifically represents the soldier POV, and this is his conflict. He lives to serve. Fives represents common sense. He's a man. A free one?
This arc has been laid out very carefully actually - Cut LaQuane, Kamino, and others - and I can't wait to see where it leads. I also loved in last night's show the visual homages to ROTK as the Umbarran tanks stepped on the clones. Some shots were echoes of the Battle of Pellanor and specifically the charge of the Mumakil. Great stuff.