I've been using a LG UBK90 for the past couple of years, it replaced a twice replaced Sony 800 that is a useless piece of junk that froze on every disk even the replacement player. The LG has briefly frozen, perhaps 3 seconds then continued...a recently released 4k disk, forgot the name of the movie...otherwise never a freeze and works perfectly.
The user interface is blah and I don''t use the apps...my TV does a much better job...
I've considered replacing it with a Panasonic but have read about some freezes, etc. on their dedicated forums and decided why spend a lot of extra money on a device that is marginally better when mine works great.