From what I have heard, that Yamaha factory in Malaysia is a very well run tight ship. Yamaha have a good reputation for dealing with warranty issues. For Moves on his budget his safest option is Yamaha at this time.
Since he only has a two channel power amp, he really does need a receiver and not an AVP. So, unfortunately an AVP like the AV 20 and AV 10 are not an option for him.
This is a huge issue, as if you put an Atmos system together using an AVP, you have a lot of amps to buy and assemble. That can really fill a room unless you can keep the amps out of site. If you buy a power amp with a bunch of channels, then it weighs a ton and you often are not much further ahead as you can't get full power from all the channels.
In order to improve the situation in terms of interior design and proper functionality, active speakers really are the answer. That solves these problems and in doing so will increase SQ with proper design and by a lot.
What I am now seeing in AVRs with multiple channels is that the power supplies are getting further stretched and power output is decreasing with just two channels driven over one. And who just drives one channel? So this is all descending into a farce. This was predictable as adding those amps, leaves less room for the power supply and the quiescent current is now significant, so just driving two channels embarrasses the power supply. I am in no doubt we have gone down a dead end that is ending up badly as we run out of road.