Seems like we are all buying televisions this season, we should, the prices are right. Please do not give all those savings back by buying overpiced HDMI cables. Do not listen to the salesperson who will lie to you about the importance of overpaying for a cable. If you want one, go to Five Below and buy the $5 cable, really, it's the same as the $50-80 cable the Big Blue store will lie you into buying.
Cheap cables will produce the exact same picture and sound quality as expensive cables. Check out our HDMI cable trilogy: "Why all HDMI cables are the same," "Why all HDMI cables are the same, Part 2," and "Still more reasons why all HDMI cables are the same." These articles explain how HDMI cables work, and why by their very nature, you're either getting a perfect image, or no image at all.
Type
When it comes to TVs, there are four kinds of HDMI cables:
- High speed with Ethernet
- High speed without Ethernet
- Standard speed with Ethernet
- Standard speed without Ethernet
Standard speed cables can handle up to 1080i. High speed can handle definition far beyond 1080p. Here's the thing: the price difference is negligible, so buy only high-speed cables. Most HDMI cables you'll find in a store are high-speed cables.
Very few products have Ethernet-over-HDMI compatibility, so it's not likely you need to pay extra for the feature in the cable. If you want to "future proof" your system slightly, then that's your call. For most people, though, I don't see the point. Again, the price difference is marginal, so it's not a big deal either way. If you're sure your equipment has Ethernet-over-HDMI compatibility, then of course check out those HDMI cables. That likelihood is small, though.
The short version: Buy high speed without Ethernet and don't worry about the other types.
Keep in mind a few things: There is no such thing as an "HDMI 1.4" cable, nor do you need a special cable for 3D, 120 or 240Hz, or Audio Return Channel (ARC).
There is no loss in picture quality over long distances. However, there will be a point where you just don't get a picture anymore. So if you're not sure if 6 feet is long enough, go for 10 feet. It shouldn't cost that much more money.
One thing to consider, regardless of length, is an active cable. RedMere technology and other active cables allow for thinner cables, or really long cables. These can be more expensive, but depending on how or where you're installing them, sometimes a tiny flexible cable works better even if it costs a little more.