I like the redmere stuff from monoprice for long runs. I've had some issues with the 25-30foot runs I've done with the flat CL2 cables. my brother uses the redmere stuff and has had no problems at all at the long lengths
but I'm not sure they will truly be 'future-proof'. the longer the cable the lower the bandwidth it seems to be able to carry, and the great the handshake issues. I bought all my hdmi cables before monoprice had the redmere stuff, and my longer runs that used to work with my 720p projector are kind of sketchy and unreliable with the 1080p one. I used to be able to have all my displays going at the same time(I have 3 hooked up to a powered splitter) but now it only seems to work consistently if I use one at a time.
anyway, point being, just because a 6foot hdmi cable is supposed to be good for UHD, doesn't mean a 30foot version will be. I suspect when we finally get the full UHD signal, it's not going to work well with long runs of hdmi cables designed for 1080p.
you may be better off running a line or two of cat6 to future proof yourself. that way, if they end up using a different connector, you're still set.
Displays: Samsung PN64F8500/JVC X35
AVR: Pioneer VSX-1130K, 7.1/5.1.2 audio
Sources: HTPC(Enby), PS3, XBOX360, Wii
Control: Harmony One