I like eco Lifestyle a lot. It has furniture to my taste, and I like to play sims that are a bit like me. I'm always looking out for the environment and making sure my energy bills are really low compared to all other dutch people and I think it is really nice you can do that in the sims too now.
I like the windmills and the solar panels. They are always broken though, so it is a constant chor to live off the grid. But I guess that is realistic. I bought the eco lifestyle together with the tiny living pack and it combines really well.
The first couple of games I did not live in the new neighborhood. But my previous game I did. I loved the fact that it got greener and greener in that dumpster like neighborhood as we voted for green neighborhood plans.
In the end you would almost consider moving there in real life ;)
I did not buy or see the winter pack yet. I would like to see it though. I don't want to buy all the packs though. I'm afraid for the performance. I remember it being a huge issue in the sims 3 once I had about half of the expansions. I think the sims 4 is a lot better but I'm not rich and I think buying one or two things a year for the sims keeps it fun enough. And it keeps my computer happy as well. ;)