My first one I did with Super Saver and size 8. I just did knit all the way so it went pretty quick. It's not the most durable yarn for a rug though but it's in front of the sink so it's not a huge deal.
I am doing a 4 strand sugar-n-cream yarn on 13 needles now. Going much faster and it's durable. Needs to be since it'll be in the foyer.
The downstairs of our new house is all tile. The echo is killing me. Hence the thought of mine to make rugs.