Hello I'm New

[NeverHappy]

I have the million dollar question that you've probably heard over and over. I'm torn between the Panasonic Plasma 85u 46" or the 50" Everyone claims that panasonic plasmas are great second only to pioneer but we all know those come with a steep price tag. I went to Best Buy and looked at the 85u 50" Panny playing I-Robot and noticed alot of grain or noise or whatever the term may be. Is this because their sets are not calibrated or is this the norm with this TV if so will going with the 46" minimize this effect or will it still be heavily present. Try not to slaughter me for this post it's my first one. Thanks for any advise. I currently have A Panasonic BD-30 Blu-Ray an Onkyo 805 receiver and a Definitive Tech cinema pro 1000 I'm just missing a TV please help?