Best - The 401k match is decent. Put in 4%, they'll put in 3%. Worst - If you have dependents (as in, more than just a spouse, but you have kids too), the cost of the premium is expensive.
Best thing is Vacation Days and Flex Time during the summer
Avant is a great bridge for those international medical professionals who are looking to work here in the United States.
List based on reports from current and former employees. It may not be complete.