Finally getting around to adding a television above outdoor fireplace. Due to my set up, I need to extend HDMI from inside the house to outside, and extend RCA connections, from inside to outside, as well. We are talking about less than 50 feet. I have two CAT6 lines running from inside to out, as well as a CAT5 and RG6. I know that I can purchase baluns for the HDMI extension....but I have seen them run from $40 to $400....so what am I looking for in terms of minimum features features. I don't care about 4K capability....will be watching primarily DirecTV on the outside TV. AS far as the RCA connections, those are to go from TV outside to the Sonos Connect Amp inside the house, which is connected to the speaker wire in the house which runs to the outdoor speakers. I have also seen RCA to CAT5/6 extenders available on line, but again, have seen a wide range of prices. Looking for a cost effective solution, do not need ultra high end, just something that is functional and will meet my basic requirements. Thank you in advance for your input.