I used to really like Remington Nitro Steel Mags. I've found that pretty much all the Remington I've shot in the last few years burn very poorly. Tons of power residue... They have not seemed to hit as hard as Winchester or Federal either... I really like both Hevi-Metal and Winchester Supremes for all around waterfowling loads.
I've also read online, not experienced first hand the above mentioned situations with Hypersonic...