This show is why I feel vaguely guilty about ragging on Castle so much because god knows the asspulls required to wrap things up every episode are at least as egregious. I have no idea if Simon Baker is a better actor in general but in this case his character is a bigger douchebag than Fillion's and so I like his show better. I think it comes down to those warm, humanizing moments when Castle rebounds from something by talking to his daughter or mother. God, is that boring.