Just when I was about to download these albums, I found the originals. Quite surprising since Megadeth albums after Risk aren't available here. Probably it has to do with the fact that these two bands toured here.
Megadeth - United Abominations - Good stuff.
MachineHead - The Blackening - Still have to give this album a few more listens. Listened to it only once. Sounds interesting. Halo appealed to me.