I can't compare RM and TPG since I only watched the first episode of the latter. I stopped there because I didn't feel thrilled enough. About RM I loved the acting (best of he year for me), the culture theme which was well executed, the soundtrack (for the first time a thai music interested me), the chemistry between the actors. But I didn't like how the director waste time on unworthy character. In the middle of the drama Rerin and Suriya had no development. However they started well. A lakorn like RM deserves the length of a Sageuk because there too many things to explain. But nevertheless this lalorn made really love Ateam as a couple and appreciate Aff, Chai and Aum acting.