Need a TV that accepts Discrete codes

[Marineau]

I want buy a TV Samsung, pioneer or Panasonic Plasma 50inch....

I tried many discrete code on my Remote 8811 !

Each time, with my car, I'm going to ShopStore (40 miles) to try my remote on these TV !
Each time (3 times) that I tried all discrte code refuse to work

I'm tired... I want to be sure before to buy a TV that this TV have a discrete code !

My question is:
Does all TV Plasma Panasonic have a discrete code ?
Does all TV Plasma Samsung have a discrete code ?
Does all TV Plasma Pioneer have a discrete code ?

Is it possible that buy by bad luck a TV that don't have a discrete code for this 3 brand ?

Does it exist a list (brand and model) has or not has a Discrete code ?

Thanks