I have today installed plex on my media server. I then purchase and installed PLAYz on the TV, which is nice and fast but the interface is a little bit ugly, plain and lacking, I then found Xplay and purchased this thinking it may be better, and initially I thought it looked great, but then I realised it is severely slow, click on anything and I have to wait several seconds for it to do anything.
Bit of a disapointment and waste of money to be honest.
I had hoped to find the plex one but its not listed in the LG app store thing, so I guess its been pulled.