While HDCP is an issue over about 15 meters we have hed no problem supporting over 100' with our restorer.
With any cable over 5 meters I recommend that you pretest prior to installation.
Any AND all HDMI cable mfgrs have the same problem of mounting all of those little cables onto all of those little pins. There will be problems even from the best mfgr.
We have developed an HDMI cable testor (send & receive units) to verify that all of the cable circuits are complete (note: this does not test signal strengh only that the circuits are complete). Starting next week we will be testing all of 10/15/20 & 30 meters before they are shipped. Hopefully this will reduce field problems.
Also the testor will be available to installers in about 45 days (delay due to finding the right housing).

Is anyone going to Locuspaloosa in Philly/Richmond next week or EHXpo in Anaheim, we will ahve the testor there.