In need of a new bluray player lost without oppo now what ?


Just want to spend in the $500.00 area for a 4k Blu-ray player, I had an Oppo 103 and want to upgrade to 4k.

Any thoughts on Panasonic DP UB820 player or the Samsung UBD M9500.

A recommendation would be appreciated.

thank you

tesseract86
yup, millercarbon must has some sort of profit interest in Synergistic Research. 
not sure if I'd go Samsung as they no longer make 4K Players?
I have one from a few years ago that is working fine but..???
Thanks guys , auxiput, i did'nt get "non AG classified" sorry, .but sounds good, thanks.
Pioneer is where it's at right now, but I don't know if they have a less expensive version of their 1K model.