Even this old bean has never really heard Possessed , and I am usually up on the thrashy stuff. I have a compilation (maybe a metal massacre?) that had one song, and I remember not liking it. If their last two are considered thrash, then I'll take a chance and get them.
I do, though, have that '98 Metal Church live album, and though I am not a fan of live albums, I love this and recommend this one highly. Wayne on vocals, sound quality is good considering they came from some tapes in a basement or something.
I even like Masterpeace, reminicent of later Metal Church but with Wayne again on vocals. Nothing, not even this, touches their self-titled debut for thrash, though. Beyond the Black is one the top ten songs ever recorded, IMO.