30ft HMDI High Speed Cable Recommendation needed

For in-wall installation i would highly recommend using a conduit. We recently remodeled so while the walls were open, I ran conduit down the walls in the "computer room" and in the family room (where the HTS is). The conduit is wide enough to handle multiple cables if need be. I used CAT-6 in the conduit (for a length of about 65') and then connected the ends, via CAT-6 etherent to a gigabit switch in the family room and to the router in the computer room. You can do the same thing using HDBase-T connectors or a 30' Redmere cable because they are active HDMI cables. The only disadvantage of a Redmere cable is that they have a chipset in the Sink end (tv side) that makes them "active" which means that they can fail like any electronic component. FWIW, I haven't had any cable failures. However, with the use of a conduit, it is easy to repair/replace cables if need be. And if you install a pull-string at the same time, you can easily add another cable down the road.