I've been playing through it the last few weeks. I really loved the first one, and the freemium stuff was definitely annoying at first as the tutorial definitely pushes them on you.
But I just made the choice to never use any power-ups except the plant-food that you earn throughout a level. So far I've finished all 3 worlds and am going back to try earn more stars. Some of the later plants are going to be useful in completing challenges I think.
All in all, there is a bit more variety in the challenges (don't plant more than x plants, don't let zombies cross this line, matching games, etc). I like it.
But I just made the choice to never use any power-ups except the plant-food that you earn throughout a level. So far I've finished all 3 worlds and am going back to try earn more stars. Some of the later plants are going to be useful in completing challenges I think.
All in all, there is a bit more variety in the challenges (don't plant more than x plants, don't let zombies cross this line, matching games, etc). I like it.