Should I buy University or Eco?

I'd have to go with University not because University itself there is nothing fun about rabbit holes but for the few very basic activities it adds. Now if you really enjoy dumpster woohoo your Sims eating bugs and objects disappearing from your lots Eco Lifestyle is the way to go.

I find that this is a hard question to answer, because it really depends on what you're into. For example, I have University, and I don't have Eco Living because it's not a topic that interests me. But maybe you're just the opposite? Maybe you're more into ecology than college-related themes? I recommend going with what theme sounds more interesting to you

Only reason I bought DU is for the new careers. It's nice to give my sims the extra bump in pay and a degree. Eco Living doesn't interest me.

Discover University adds a ton of game features, a pretty good world, and some nice households. Every feature in Eco Living is somewhat exaggerated, and I had to disable most of the environment and NAP features because they are a headache.