I don't really visit any of the others unless there's something specific I'm interested in.. right now it's tahitians so Pearls is next on the list. I avoid Pre-loved as much as possible
Mainly Hangout, Colored Stones, and RT, in no particular order - whichever last had a thread I was really interested in. I start looking at SMTB and Preloved when I have exhausted new threads in those.