Source quality is king. Period. To have a better line along with a lot more lines, requires both speed and bandwidth.(Most) manufacturers will claim anything to secure their chair on the "bleeding edge" and join the barage of "WE HAVE THAT TOO!!!!! BUY US".
What they're doing is taking advantage of their potential customers technical ignorance, while promising the picture "WILL BLOW YOU AWAY!!!"
Uh huh...wrong!
THINK before you spend your $$$ to feed the media beast. After all, now that you've bought a new set, you'll be told an "upgrade" is needed to feed the beast. More $$$ out of your pocket.../month.
Case in point: Recently discovered that if I upgraded to UVerse "triple-pac", the video cost ALONE for the lowest-tier "package" runs $80/month!!
What??? I laughed in the guys headset.....