ROTS is my definitely my least favourite prequel. The atrocious execution of Anakin’s fall and the Jedi Purge, Padme’s death, Palpatine with a lightsaber, “younglings”, the CG overkill – it’s all too damn much for me to stomach.
TPM is clearly the best of the prequels for me. The story/acting/characterization still suck, but there’re more physical sets/locations to balance out the CGI, Anakin’s not a hateful asshole, and there’s less violation of the OT mythos.