Just stepping into 4K AV with an OPPO 205 and a Sony 4K screen due later this week.

Any recommendations for a high speed HDMI 18Gbps cable? It needs to deliver over a run of 11 meters, I can't really get it any shorter.

Am I still OK with a passive cable over this distance or am I on the limit?

The screen also has an ARC HDMI connection, the player has an HDMI input. I'm assuming this is to get audio from the station received by the TV back to the OPPO?

If so then I guess I'm going to need 2 of these 11m cables, or have I misinterpreted what I've been looking at. I need to get these cables right first time as they're going under the floorboards (which means ME climbing under to fit them). Once they're under I don't want to go back again.

Sorry for the numpty questions but this is new to me and it seems there's a bit more to it than just plugging in.

Thanks, Bob