I enjoy the emotions but think they need a few changes.
The most pressing ones being a stack of happy moodlets over-riding a sudden death of a loved one. The grief/sad moodlet should always over-ride a stack of happy positive moodlets.... always, even if only for 4 hours. It's different if after the death the player directs the grieving sim to do specific things to reduce the sad moodlet but watching your sim smile while standing over the urn of their just-dead soul mate is wrong.
I also think a flirty sim should not flirt with just anyone if they are married and they should not get a whim to woohoo with 'someone'. The whim should have the spouses name on it.
I like the different ways sim will do things depending on their current emotions, such as eating. The sad eating animation is actually pretty cute. The stressed/tense sim that slams the fridge door always makes me jump, but that's good. I like it when my sims 'act up'.
I also like how certain emotions will give quite substantial skill boosts. A 40% skill boost for being very happy while chatting to yourself in the mirror to raise charisma skill... yep, I'll take that! Good thing is I can also ignore the moods/skills boost of I want to play a different way.