It may make a small difference if you have really long cables (like glynor explained), but even then those cables that are $100+ are just a waste of money.
Most people won't use that long cables, though.
I've regularly used (it is working today, actually), a 75' run of HDMI using these:
http://www.rapidrun.com/product_list.asp?cat_id=4109They are more than $100, but they're Plenum or CL2 rated (so they can be run through walls and not make fire marshals cry), and
they work at those lengths. At those lengths, you need special active cables, and they're not cheap (nor are converters to HD-SDI to make even longer runs), especially if you want ones that you would be willing to run through walls.
The RapidRun AV cabling system is absolutely awesome for long, in-wall cable runs. Interchangeable ends mean you can convert the connectors later, if needed, and more importantly, if the cable breaks it is usually just a cheap flying-lead or wall plate, not the in-wall cable.
PS. Don't pay retail from Cables2Go if you ever buy these. Check Amazon. They're 1/2 to 1/3rd the price.