First of all, I'd like to thank the kind gentlemen who helped me obtain quality rips of these beasts. Thank you, good sir!
Messiah were a Swiss band that played vicious death/thrash throughout the 80's, but would develop a far more flat-out death metal-oriented sound once the 90's came around. Personally, and this seems to be the general opinion as well, their 80's material surpasses the 90's stuff by miles, and these two demos are good examples as to why (but 1986's Hymn to Abramelin is really their masterpiece).
Both demos differ quite a bit from eachother. Powertrash, although it is an awesome demo, is much more underdeveloped in terms of songwriting, as well as musicianship, and has more a Hellhammer type sound then the ripping death/thrash they would develop a year later. It's actually amazing how much they improved in such a short amount of time. And by the time they got around to recording their first LP, Hymn to Abramelin, which is one of my favorite albums of all time, they had become masters of the craft and made history.
I had to use megaupload because the file size exceeds 100 MB's, but is it me or has megaupload gotten pretty damn fast and efficient (aside from those irritating spam protector code things)?