Thanks - the thickness of the rug (pile) is supposedly 1/2" and the pad is 1/4". They recommended against 1/2" (which I also think seems very high." It's a combination of rubber and padding.

what size did you choose? We have the same size living room and im trying to figure out what size is best also

Tried to edit my original post but kept getting errors. The problem with all the "DO" rules is my room is irregular in that where the bed is is only 9'6" wide therefore the rule of the big rug is out the window - which my husband says was created and pushed by the rug industry to make you buy the more expensive rug LOL. So I'm stuck with.... 8x10 - if I turn the rug 'long ways' and fit all the way up to the headboard would leave about 9" of bare floor on the sides, stick out 3' past the foot of the bed (which is fine) and cause uneven nightstands likely to adjust, could stick felt pads under the 2 legs. 6.5x9 - would leave only 3" bare floor each side basically filling that space, leaving the nightstands free. 5x7.5 - would leave ~15" sticking out, enough to put your feet on but hardly enought to see the rug I love. May have to find another location for this rug and stick w the runners. We have limited time there as it's a vacation property we're trying to fix up to rent and wanted to have things pre-purchased. Wayfair has some fast shipping so may have to just wait and map it out w the tape.

The prices I referenced were based on actual quotes, so they are high, but they aren't high guesses. I quoted this because the question was about "very high quality broadloom" and I would put 100% wool Wilton weave imported from Italy in this category. That doesn't mean that there aren't a bunch of decent quality tufted broadloom options out there for less. I guess you have to define very high quality--which can mean different things to different people, and what a very high price is, which can also mean different things. I think those quotes are expensive but that's what they were. Rugs from RH are hand knotted, but in this size you can also pay $5000-7000 pretty easily too. And there are lots of less pricey options there, too. The thing to do when getting broadloom cut is to optimize what you are getting. If the mill width is 13.5', you might as well size it as close to the mill with by as close to whatever running yard amount works for the room: If you got a 12x16 exactly for example, you would be wasting 1.5 feet along the length and you might have to buy 6 running yards (18 feet) to cut it down to 16. So there would be waste at the end. Some carpets you can by in increments of yards though. But if a 13.5 foot width by slightly under 15 foot length would do the trick, then you would be utilizing everything you bought. The less expensive the carpet the less you have to be concerned about waste, money wise. The binding also adds to the cost. The least expensive option is to use twill tape that matches or blends with the pile, color matched serging is more expensive, and decorative binding more expensive again.