Right now, and until I formally complete my Legacy Challenge game, I'm with Sims4. Occasionally, I do go back to both Sims2 & 3. I found a copy of my singer Sim's nuclear family; parents and siblings with skills intact. I've played them twice in this past couple of weeks. But, my Gen. 8 heir-apparent has just been born. So close to the end, it hurts. LOL I'm actually looking forward to City Life. I do enjoy this game, although I miss Sims2 toddlers, STILL, and the singer career from Sims3.
Sims4 isn't a bad game, it's just horribly incomplete.