I have a UE40C6510 or 30, whichever is the black surround. The picture is fine but the internet TV is a waste of time so I would not recommend paying for that. I bought the dongle but sansung say the wifi has to be in the same room as the TV!! My isn't and very rarely do I get a connection. Usually just a message saying no connection. I recently bought Homeplugs but still get the message saying no connection. Samsung customer services are a joke. Email them and you could replies saying where is your receipt. They have had mine for months, they are just too idle to read messages. I have emailed the CEO, Griffiths but I doubt he even read emails as I get messages saying not read. I certainly have never had a reply from him. I was told that the 6C series is later than the 7 series.