I thought the first half of the dimension Z was pretty great. Even JRJR who I can't stand was serviceable and didn't ruin it for me. The second half - and especially the conclusion - is where I thought it went off the rails. And by quite a bit too.
I liked everything about the 4th PHC except the art in the last few issues. It was the messiest, ugliest stuff I've seen in a long while.