I have been using the 2XU tights from Australia for a year now and love them. Now strangely enough, I usually take a large in womens, these I take in small (I'm 135lbs). I also have the compression sleeves as I am a weight lifter and my tendonitis acts up sometimes.

After I hike the Grand Canyon in one day, put them on, and was surprisingly recovered the next day (I had been using them a lot before this), I was sold. I wear them to bed sometimes when I am particularly sore. Just a great product.

I noticed that Zappos carries them now.