messiah wannabe <(Address removed)> said:

just stumbled across this in my bookmarks this morning - you couldn't ask for a more complete guide to thailand's various islands!

http://tezzasthaiinfo.blogspot.com/2006/12/ko-phi-phi.html

the "which island or beach" section is probably what you're after:

http://tezzasthaiinfo.blogspot.com/2007/06/index.html

it breaks all the islands down w/regard to their strong points, hassles, current prices etc. especially helpful are the reviews of the islands beach by beach... hope this helps!

-mw

Seconded. Tezza's guides are spot on. He's a like mind. I've never directly  followed them myself, but he's been to most of the places in Thailand I've frequented over the years and his output resonates entirely with the experiences I've been lucky enough to enjoy.