I love the Sims 3. As an intro to the series, it's not bad. The instructions seem a bit clearer than they were in either the original Sims or the Sims 2. However, I've had to back up, uninstall, and reinstall on at least two separate occasions when my computer decided that the Sims 3 game files no longer existed (despite them still being in the correct location, completely intact.) That was incredibly annoying.
However, as far as gameplay goes, the story-creation is nearly unrivalled. I've played so many crazy games of the Sims, (and watched crazier), that Sims must be terrified whenever I start playing them. How many odd family relationships can I create? Many. There was once a Sim who had an aunt - who was also her sister. Creeepy.
Four of five for lag and bugs, but hilarity in storytelling.