"Dead" as in both too dark and not enough sustain. I tried it with a G1 as a reso-head, never thought to go as thick as a G2 though....The Perfrmance IIs are close towhat I'm looking for on these, maybe I'll stick with those, since I already had a set kicking around....
I ran the Aquarian PII's for a long time. Not bad heads. Remember, though.. heavier heads have more mass. Once that mass is set into motion, it will take longer for it to stop. Heavier = more sustain, unless of course the heads in question have some sort of dampening material (Hydraulics, Pinstripes, etc...)
I saw a good video on YouTube, where the guy was demoing heads, back to back. At one point it was cutting in-between different shots of the same drum, with the same batter head and tuning, with only the reso head being changed out. It was very revealing. The drum had shorter sustain, with brighter overtones with the thinner reso heads, and quite the opposite with heavier heads.
I prefer matching top and bottom, both in the brand/type of head as well as the tuning. I'm running Emperors top and bottom on my floor toms right now, and at last night's gig, they (especially the 18") were really booming nicely.