Doh, I missed this thread for a few months and have to chime in. I agree with you about Among the Living not being as great as is often thought. I loved the hell out of it back in '87 but find myself not listening to it or Anthrax at all really these days, I just don't think it's interesting enough to stand up over time. I maintain as do others that Overkill should always have been considered part of the big 4 in place of Anthrax.
I think you rated the Legacy too high, IMO The New Order was Testament's high point. And I presume you are getting to Pleasures of the Flesh, for me Exodus' high point and one of the best releases of 1987. And I can't believe I keep forgetting to get Overkill's older albums, I really need to get Taking Over. Also I hated Voivod's album, maybe it's time I give it another chance though.