After having the Eclipse for a month now here is my thoughts:
Sound is great. The best TV sound on the market. Nothing negative to say here.
The negative aspect comes when we go deeper into the picture and av-sync.
The LG C7 has its flaws. Especially when it comes to micro-stutter and latency. LGs true motion doesn't work that very well with a OLED panel because the pixels are instant. So watching TV content or native Youtube or Netflix is not really that nice with the true motion engine. Disabling this helps but still doesn't satisfy my needs. There are still micro-stutter on 24 FPS, 30 FPS and 60 FPS content. LGs real cinema doesn't work either.
If you compare it to the Beovision 11 the judder-effect or soap opera effect was so much better in every way. Smooth as silk but on the Eclipse it gets stuttery. Very stuttery. A firmware fix for the LG was released the other week with bug fixes on this issue and also added the Technicolor mode. Cant wait to see when it arrives for Beoviosn Eclipse. Tests has been made through Testufo to determine frame drops.
The other issue is lip sync. Native apps has this and so does the external CEC HMDI or the HDMI on the soundbar. LG has a workaround - to disable Dolby Atmos. But because its and Beovision Eclipse you cant do that. Lip sync can be as high as 500 ms and that is not ok for a TV in that price-range.
Conclusion: BeO and LG has a long way ahead to fix these issues.