I own them all so-
Get To Work-The science career, it's the only one I stuck with long enough to reach the top. I don't like the retail stores, but Magnolia Promenade does make a nice, if quirky (sims still walk by in clown or hot dog suits), residential neighborhood.
Get Together-What's not to love? Cool CAS & build/buy objects, nightclubs, parties & a gorgeous world. I'm not a big fan of the club system, especially when the game-generated cosplay club became a nuisance in the parks, but that's not to say I'll never use it. Sometimes it takes a while for me to warm up to certain aspects of the game, even years.
City Living-Love the apartments, and loved the festivals at first, but now they're kind of meh. (my sims seemed to think so too, since they've been very poorly attended lately) The Spice district neighborhood & the karaoke bars are my favorite.
Cats & Dogs-Brindleton Bay is beautiful, the CAS & build/buy objects are awesome and the pets are well designed, but I don't like that they're not playable.
Outdoor Retreat-Sending the sims on vacation has always been one of my favorite things to do, but this ones been a little neglected since I got JA. But I still love everything about it & use copies of the rental lots as residential lots in the home worlds (same with the jungle lots, though they look more out of place in the home worlds than the cabins)
Spa Day-the yoga & the hot tubs. I don't send my sims to the spas very much, but occasionally build a home spa for them.
Dine Out-this one took a while to warm up to, but now I love it. Not into owning the restaurants, but it's fun to take the family out to dinner.
Vampires-I like this better than I thought I would. I still don't care for vampires, but I do like Forgotten Hollow & the organ.
Parenthood-I hate this one more than I thought I would. Literally every interaction in it annoys the plum out of me, except the school projects and even those are getting old. But it has cool stuff, and I really like the premade house it came with, so I put up with it. I just with they'd fix it so children would quit trashing the world with that stupid splatter paint.
Jungle Adventure-Everything! Best clothing yet, the vacation world is awesome, and the treasure hunting has made more than one of my sims filthy rich. I just wish that once they broke through the vines it would stay that way, if only for that particular sim, or that the temple would get more difficult each time the sim went through it.
Honestly, I don't even remember what goes with what stuff pack anymore, they're all kind of melded together, but I'll do my best here.
Luxury Party-what was even in this one? Don't know, but I'm sure I've used it.
Perfect Patio-I think that table & chairs I really like came in this one.
Cool Kitchen-the ice cream maker. The drinks tray came with this one too, right? One of them anyway.
Spooky-only mostly use around Halloween, but that's likely going to change soon.
Movie Hangout-the big screen TV
Romantic Garden-is this the one that came with all that flowery bohemian decor? Because I really like that.
Kids Room-I play a lot of families, so the more various kids' decor the better.
Backyard-The water slide. That came with this one, right?
Vintage Glamour-the bedroom furniture & the little girl's hair.
Bowling Night-Bowling. 'Nuff said.
Fitness-The climbing wall is my favorite, but the other equipment is cool as well.
Toddler-Really cute clothing & hair, and that toddler tunnel/ball pit is now a fixture in at least 3 of my parks.
Laundry Day-Novelty wore off pretty quickly, but I still love the round dining table & rug.
My First Pet-They're so cute & the furniture does help add some variety to the kids' rooms.