Would you please link to some of the Chalmers pieces you like?
His all papers are here: http://consc.net/all-papers-by-date/
Panpsychism and Panprotopsychism. Amherst Lecture in Philosophy, 2013. http://consc.net/papers/panpsychism.pdf
The Combination Problem for Panpsychism. In (G. Bruntrup and L. Jaskolla, eds.) Panpsychism. Oxford University Press, 2017. http://consc.net/papers/combination.pdf
So far I have solid and interesting arguments only from David Chalmers. Most others, like Penrose, make basic errors or hand wave too much to my taste.