I too am in the pro-Ostone camp. I find that it's a much better late-game topdeck, and almost always just as good as Nev's Disk in the early game. In the late game it can save specific permanents, hit a few things that Nev's Disk misses, and wrath the turn it comes down if necessary. Those are all huge bonuses in my book.
Colourless Mass Removal