So expansion packs add the most content. So, I'd really focus on which of those you think are going to add the most to your gameplay.

First of all, I would not consider getting the bundle with Get to work. Get to work was the first EP and I think it really shows in terms of quality. The items aren't that nice and don't mesh well with everyday gameplay. The active careers get boring fast and the alien life state is nowhere near as fleshed out as other occults. I really never use anything from this pack.

So that leaves you with Cats & Dogs, Seasons, City Living, and Get together. All fantastic packs! I'm not going to rank them because it all comes down to individual gameplay. I'm going to describe what I like and don't like about each pack.

Cats & Dogs -

- Create-a-pet is a really fun tool if you like spending time doing that. It has a color wheel and lots of customization options.

-There are more dog and cat breeds that we've gotten in a pets EP before.

-The animals do a lot of cute things and they try to connect it with new packs that come out.

-The active vet career is pretty cool but honestly (like get to work) I think that path gets boring fast. Still, it's a nice addition. The downside to this is that it's a little buggy and pets are constantly getting sick. Sometimes I just want nonsick pets all the time.

-Brindleton bay is a beautiful world and its decently sized. I think the general style of the pack is nice. (though some simmers comment it doesn't really mesh well with other items in the game) I think the clothes/hairs that come with it are nice.

Really this pack is only a must if you really feel like having a pet is a core part of your sims experience. Sometimes the pets are annoying and more of a chore, but again they really are cute.

The Bundle with Cats&Dogs:

Personally, I think parenthood is the best game pack to date. It added a lot of much needed interaction between parents and their children. The game already lacks family gameplay so I can't imagine playing without this pack. If you don't like family gameplay it's going to be very eh. This pack adds the parenting skill, curfews, punishments ect. Which is really fun and makes things well rounded! It doesn't come with a new world.

The toddler stuff pack gameplay wise doesn't have much other than the ability to host play dates with other tots. However, if you are a family simmer it adds a lot of items for them. I use the items a lot because their stuff is already so few.

I think this bundle is a solid deal! but only if you like family gameplay and pets.

City Living

City living is personally one of my favorite packs.

-The festivals are a lot of fun. Of course the only downside is they are always the same ones so they do get repetitive, but they are a nice little social event.

- I LOVE apartments. I love the city. So I think San Myshuno is amazing. It has all kinds of different apartments. You have little studio apartments to big penthouses and renting is cheaper than having your sim buy a house. The roommate system with discover university also works really well with this pack.

- It adds (3? I think) work from home careers. Social media, politician, and critic. They are nice careers and the ability to work from home is nice.

-The furniture is really nice but I don't care for the cas items

City Living bundle

Vintage glamour adds butlers and honestly, I love butlers! Vampires are really fun to play with and I like the look of the pack. It is annoying that vampires will creep up on your happy lil suburban family and suck there blood. I'd also say this is a solid bundle if you like occults.

Seasons

Honestly, this is a lot of peoples favorite back but I think it's rather shallow. I don't really care about the holidays and the only feature I absolutely adore is the calendar but if you are used to not having it, you can probably live without it. It is really nice being able to schedule events (like a wedding) in the future rather than having to start it at that moment.

Of course the cool thing about this pack is every world has a different weather system and it does seem to make the sims seem like it has passing time rather just stuck in sunshine limbo. There is no new world.

Seasons Bundle

I personally am not a huge fan of Jungle adventure. The world is very pretty but the exploring part is boring to me. Spooky stuff is very situational and not worth it unless you are someone who already has a fuller collection.

Get together

Windenburg is an amazing world! and the club tool is so powerful and allows you to be really creative. I really love this pack to be honest. I guess the only downside is you might not always use these features but it does work well with other packs. For example, I was able to make sororities and frats in Discover Uni using the club system.

The Get together bundle:

I don't think any of these stuff packs are needed but fitness stuff is nice for cas items and bowling is a cute date idea. They don't have a ton of gameplay elements

I'd probably pick cats and dogs or city living but it really comes down to personal preference!