I am running some HDMI in my walls. The length will be about 70 or so feet, perhaps just 60 feet. I am looking at cables and I see ratings like "CL2, CL3, HDMI 1.2a, HDMI 1.3". The CL3 are quite a bit more money than the CL2. I will eventually get a Blue Ray, but other than that all my signals run from a SageTV box. What formats do I need for HDMI, if I save a few bucks by going CL2 am I limiting anything down the road?