Iwork or similar for mac.

Hi, I am getting a mac again and so am a bit out of touch with iWork etc. What do people think are the best apps to use? From what I remember Pages and numbers were ok but this was a while a go so... If you have alternatives to say Keynote or Pages etc that you can share I would be most happy. I am doing a business course so Pages and Numbers or similar will be the most important for me.