Well actually it had trouble with a couple of dvd's,some dvd-r's and one or 2 bd's but I wasn't going to wait for more trouble, The JVC was about 4 years old now.
Panny seems to play the troublesome dvd-r's fine,checked one yesterday.
Also upscaled pic quality of dvd and usb content seems to be much better (to my surprise),haven't really checked bd quality yet.
And there's other advantages which I'll be explaining later after some more testing.