Well, I'm currently on my second multiregion Oppo. The first one (a 93D) lasted 5 years, had occasional hiccups when it wouldn't let me change bluray region, and eventually developed a terminal problem of skipping/freezing, which cleaning of heads etc didn't cure.
So, I bought no.3 (103D) 2 years ago. Now this machine has got stuck on Region A for bluray, so won't let me play any UK blurays except those that are region free. Totally unresponsive to the remote key region change setup (dimmer/dimmer/mute/number)
I've done all the usual things - unplug for a while, factory reset, made sure its firmware was up to date, but it's still stuck on Region A.
After some time searching I eventually found where I bought it from, and contacted them. They'ld take it back but it will cost me for repairs etc. As this machine has also started skipping/freezing (on discs which play perfectly on my Mac (DVDs), PS4, SWMBO's Panasonic bluray player) I think this one will also fail very soon. So, I'm unwilling to throw any more money at it.
For now I've decided to use my PS4 for playback, and have ordered a new (fairly cheap) multiregion (DVD and bluray) Panasonic machine. Incidentally, the picture on SWMBO's Panasonic which came 'free' with her Panasonic 3D TV looks just as good as that generated by the Oppo (IMO)
Bye bye, Oppo.