Sims 1:
PROS: No aging,great soundtrack,awesome graphics,provides hours and hours of fun!
CONS: Needs drained too quickly,could not build basements,that annoying organ grinder! You had to place pet cages and the pet trainer on your lot just ot keep the organ grinder away.
I never played much of Sims 2,but I loved the Create-a-World option!
Sims 3.I coud not play it because of countless bugs,crashes,freezing and glitches
Sims 4"
PROS:Nice graphics,and the color wheel for cats and dogs.
CONS: Worlds that are waaaay too small,base game lots/types being plunked into every new pack that comes out. Hopefully with 32-bit support being dropped,EA will give us bigger worlds and new lot types/venues(I hope).