krabi is much cleaner and better than phuket.
But more expensive in terms of hotel and tours...esp during peak
season!
When will u be going? If off-peak, most hotels are below $80/night
range. While peak season, all hotels are ABOVE $80/night.
You might wish to read up on www.virtualtourist.com if u wish to go
on a budget and stay "home stay" or real budget.
Cheers!