Get Famous vs. Get to Work

In my opinion, Get Famous has the edge of adding more to the game outside of the new career. With GTW, aside from times when you're playing with retail or one of the careers, you won't make too much use of the pack. Whereas you can use the fame and reputation systems no matter what you're doing with your game at the moment. GF has more of what I think of as "passive content" - gameplay additions that affect your game at all times, kind of in the background, rather than you having to do something very specific to use the new content. If that makes any sense, lol.

I do really enjoy the careers GTW comes with, though. So if you do go with that, it's not a bad choice.