I also know another new grad recently hired at Hudson River Trading, and another new grad recently hired at Jump Trading. Both are earning over $400k per year, but they work 45 hour weeks. And since RenTech has been mentioned in this thread: the people I know there have wonderful work life balance.
I have found that most popular conceptions of bad work life balance in finance apply to banking and sell side, not to the buy side. Working as a developer at a bank usually sucks, both financially and culturally, in my experience. Not always, but commonly. Working at a hedge fund can be very nice both financially and culturally.