Keeping in mind I've only played The Sims 4, my first purchase for it was a bundle with Parenthood, Vintage Glamour and Bowling Night. The first one to install was Bowling Night so I count that as my ...
Get to Work at full price, I really regretted it. I also have Cats & Dogs but only bought it at half price. I probably won't buy any more expansions until TS5 comes out and the prices drop like TS3.