The compensation figures on here coincide with what I have read. But it seems like when you talk to real people in the field, they indicate that figures like these are a bit inflated.
VASH--as far as lifestyle is concerned, EM is one of the best fields. Residency is not any better than the rest of the specialties, unless something changes within the senior years. Intern year is a bit like a transitional year, where you rotate through IM and surgery, but of course with the intent of being able to treat emergent patients.
Again, from what I've read, the lifestyle of an attending is great. NBC's ER does not provide the best showing of this, as sensationalism in the medical field has always done well for ratings on the networks. Anyway, EM physicians work three days a week typically, on 12 hour shifts. So if you like a four day weekend, perhaps EM is for you. There is also no call.
However, there is a very dark side to EM. Tons of patients are there for drugs, not treatment. This is a major factor in burnout for these types of doctors. Also, I suspect paperwork is greater, because of insurance matters. If you like patient continuity, EM has none...but if you don't concerned with knowing what happens to your patient after you've done basic treatment, then it's not a problem. And you've got to be able to handle patients that are self-destructive and not interested in helping themselves.
Hope this is somewhat informative.