The trailers for these movies make them look exciting. The movies are entertaining, especially if you make a drinking game out of all the western movie "homages" that appear in both films. There are plenty. King Ghidorah is the better movie, since Mothra started the whole beam wars, though both movies are full of them and lots of other shiny lights. Still, the lack of CG is a plus, since the effects now look so different.
Both movies have some good points, but the scripts to the movies could have used one more re-write. Ghidorah is full of time travel paradoxes that can make even a casual fan's head explode. It's fun to watch some fans twist themselves into pretzels trying to make it work. It's fun!