Hello Yko74, welcome to the forum! If you will experience lip sync issues depends on the used TV set and/or the used connection (HDMI/arc or digital coax) to the SA30. I do not experience any audio delay anymore with my Samsung TV model UE46F6500 connected through HDMI. Some other forum user report there are still issue with other TV sets, refer to ARC: audio and video are not in sync, ref#52
From Async Issue with all digital inputs, ref#85 it appears there are still audio delays once you connect through the digital coax connection. I belief this issue still exists, I cannot conform because I do not use this setup.
I would advise to try out your specific setup first before buying the SA30, maybe your dealer can assist you with this?
Hope this helps.