Elites are pretty sweet. So are GT50s. So are E7000s.
There's a thread about two threads above this one where people are complaining about DSE, banding, blobs and buzzing on their Pannys. I haven't read the Elite thread but him sure there is something. All Plasmas buzz to some degree. Not all can hear it. Heck I can only hear it from mine when standing up close and only out of one ear.
When i was shopping, the GT50 at some stores seemed worse. Others better. I think it comes down to environment and individual susceptibility.
No TV is perfect.