Koh Phi Phi stands as my favorite place in the world (out of almost 40 countries visited). Phuket is pretty, but it's busy and not unlike many other 'paradise' places. Phi Phi is different. The islands are impossibly beautiful and it is as relaxing and laid back as Thailand beaches get. There are no cars and very limited touting. It's truly different and special. This is one place where I will put my hotel status aside, stay in a local standard decent room for ~$25, and just relax and unwind and really do whatever I want.
I'm headed back in a month - can you tell I'm exicted??