What are the main differences between the first game and the second?

I know that this question is probably asked often, however searching through the posts similar, I feel as though there's a lack of info or detail given (I need lots of details loool)

I already have the first game, I love it very much, however the second game is now discounted for a little bit, and I've seen so many posts about the second game and it looks so much nicer (graphic wise which is a selling point for me) But what does houseflipper 2 offer that houseflipper 1 doesn't? Or vise versa, I just need a really good comparison to understand if I want to get houseflipper 2 :,)