AFAIK, Rpi wont give you pass-through option over HDMI for DTS HD MA and Dolby TrueHD. So you will lose on lossless audio for 7.1 channels. Rpi3 can "Decode" these formats but "cannot" pass-trough them to AVR for decoding. All you would get is LPCM data for 7.1 channels.
Guys,
I got a quote of 47K for 32LH60YR, 700W audio. This is without any freebies from LG outlet in Pune. Anybody has any idea from where I can get the cheapest quote for this model?