Plasma. My last 3 sets have been Samsung plasmas (so I'm a plasma sort of person). I've had the PN58C8000 since mid-July, and I'm very happy with it. I do watch 3D from DirecTV.

The buzzing issue is a difficulty. I would not accept any audible buzzing, and some Samsung (and other) plasmas do buzz, clearly. I was fully prepared to send mine back if I heard a buzz, but I was lucky. No buzz.