The Plague is a solid overstable distance driver.  I own them in a few plastics, the prototype plastic is more understable than the rest and sort of flies like a different disc altogether.   I haven't noticed too much of a difference in flight between toxic waste, radioactive waste, and biohazard, so pick whichever plastic you like the best.  All of Doomsday's premium plastic blends feel nice in the hand and have great grip, biohazard tends to be gummier and softer.  

The Plague is a little more overstable than the flight numbers suggest, at least brand new I don't see any turn out of the disc even when thrown for max distance.  However it's a very nice overstable driver, it feels very fast, has good glide, and is overstable enough to fight out of most flex shots.  I also like it for forehands.  If you're looking for more of a flip-up distance bomber  in Doomsday's lineup I would suggest the Famine.  The Plague and the Famine compliment each other well.  

Doomsday's Destroyer. I've bagged Destroyers, Defenders, Raiders, Zeuses, you name it. This disc has a place among the industry's overstable, workhorse distance drivers. Hand feel reminds me of a mutated D2, a little funky but not uncomfortable. If you're building a bag from smaller brands, this is one you've got to try!