Both Reunion albums are like
equal for me, but G&M has 3 of my absolute favorite songs of the band, all written by Kai. I also like Skyfall a lot.
More fun? I think they are both the same in that respect, the latest one has more breathing space compared to the previous one.
The guitars are low in the mix, not cool.
I also prefer GR with only Kai on vocals, love his voice, but Ralf is a beast of a vocalist (still is,
check here), Halford's prime level.
Heading To The East is one of the best live albums, both he and Kai are brutally good on it.