You can pick up McCoy at Strictly Fishing in Plainfield. Or, of course, you can order direct from the company. I must say that I used P-Line extensively for many years before turning to McCoy. P-Line was ok, but McCoy is, in my humble opinion, in another league. When it comes to memory, P-Line cannot hold a candle to McCoy. Also, like Brian said, you don't want to put 8 pound test or higher on your spinning reel if you ARE USING P-LINE! But, in contrast, I have 8 pound McCoy on one of my spinning reels and it work phenomenally well.
If you are looking for a limp line that is strong and behaves on a spinning reel, then McCoy is for you! Thus far, everyone I have turned onto McCoy has agreed and is now devoted to the line.