Hi all so i've decided to set a basic home theatre 5.1 system in the family room that could grow to 7.1 by having different zones in the house. I'm really completely new to home theater. So far I picked up a 55" smart tv and have hung it on the wall of this 12x22 room with 20 foot ceilings. I plan that all wires will be in the wall and the receiver will be about 30 feet away in the next room in a cabinet. Unfortnately the waf factor is big here. I am looking at two different receivers at the moment trying to make my mind up. Either the Onkyo Tx-NR616 due to its low price but the horrible reviews have me wondering if all the firmware updates have corrected the issues. The other is the Yamaha Aventage Rx820 again because it is on sale. Any thoughts on those two receivers is appreciated. I realize they are 7.2 receivers but i'd want to use the extra two channels for some deck or kitchen speakers.
I have some really basic question that I'm almost embarassed to ask. First, I only have the most basic cable package there is. The kind that only has local channels in order to have cable internet. If I have one of those two receivers, and I only have coax coming from the wall since there is no cable box with this cheap of cable package, where do I plug the coax in? Does the coax get plugged into the receiver then I run an hdmi to the tv so it can upconvert the mostly non-hd channels? Do these receivers have a spot to plug in coax cable?
Second do I need a separate HDMI cable for each source from the tv to the receiver? So for example if I have a blue ray player do I run the blu ray player to the receiver via hdmi and a dedicaded hdmi for the blue ray player from the receiver to the tv? Therefor I'd need a second HDMI cable from the receiver to the tv if indeed i plug the cable coax into the receiver? I'm going to need 40 food hdmi cables and they are expensive. Any input is appreciated.