Depends on your bank account and your family (probably your own) requirements ... and how important a good picture is to you
For an excellent picture there is only one player offering a Plasma replacement at the moment and that is LG with their 4K UHD OLED's but not cheap... although coming down in price. With Sony/Panasonic exiting the Plasma picture business due to Samsung price dumping, and Samsung not currently able to get OLED to work .... it's LG .
All the other offerings at the moment are just a compromise to get the best out of the components that they have.
Having said that, I am sitting on my Panny Plasmas for the time being until standards are finally agreed and the prices are down.