Probably the 30 hours a week.
I could really use 60k because I've got a baby due in a few months...
But if I'm working 60 hours a week I'm not even going to have much time at home, and even now, babyless and working 40-45 hours a week its tough to get stuff done that needs done as well as find time to do fun stuff.
(and 30k isn't really bad, especially for the hours put in)