This is my first post! *newbie wave*

I've only known iStockphoto and have been exclusive with them since 2005. For the past couple of years I've been building up frustration with them with the lack of sales, slashing royalty rates, greediness, disrespect to contributors, and countless number of problems. I have been contemplating leaving the exclusivity program for a while now but I am afraid to pull the trigger.

If you were an exclusive istocker before, do you have any words of advice? Did you regret your decision? What is your experience?