More HDMI length and splitting questions

[craigzilla]

OK, you guys have been great in the past helping me out, so I did a quick perusal and couldn't quite find the answers I'm looking for.

Essentially, I am looking at monoprice and thinking of buying a 1 HDMI in and 4 HDMI out splitter, then running HDMI cables to 4 TV's throughout the house so we can watch shows on DVR anywhere. It seems like the few hundred dollars to do that is cheaper long term than getting another cable box ($25/month from Cox?).

So I'm wondering, if I hook up a 50 ft, 2x40ft, and 30 ft HDMI cables (was going to get the Redmere ones), what are your thoughts on degradation over those lengths? All except one TV run 1080p (it is an old first generation Sony with the separate digital tuner box - so I will also need to convert from HDMI to DVI for the input).

Anyone have any thoughts on this? What about HDMI to Cat 6? Is that cheaper and still as effective? I have a guy coming this week to run cable, so I need to order it asap.

Thanks!