I used to get my rugs at ABC Carpet & Home in NYC in their basement where all the deals are. If I'd had tens of thousands of dollars, I would have shopped upstairs. I bought my dinning room rug and living room rug there. 100% wool, it lasts; I still have them both. For a lighter rug, I'd look for something in natural fibers. I dislike artificial fibers in rugs, except in extremely high traffic areas, and I don't have any of those here.
My favorite type of rug is Kilim, but I don't have one right now. Used to have one (from ABC) and I honestly can't remember what happened to it. It was 8x10 so not easy to misplace. I think I ended up giving it away when I decided I wanted a knotted wool rug. But they are still my favorite.
I have a few other cheaper wool rugs. A number of my scatter rugs were made by me (Krokbragd woven or hand hooked), the others are antique hooked rugs (two of which I'm finishing--I bought them unfinished for cheap) and a hand woven rug from Oaxaca, dyed with all-natural dyes.
I consider rugs and carpets works of art, so materials, craftsmanship, and design are what I look for.