It is addictive for sure. How did you come up with these choices? These are three different animals and depending on what you already have and like, either one is good.
However, Pi is the strongest and most long lasting, if you like sweet / vanilla scents. It's too strong for summer, though I wear a little of it some times.
212 is another good aquatic / fresh scent. Pleasant and pretty popular. Given that summer is close, this one might be the most appropriate choice.
Magnetism... Good but synthetic, more appropriate for clubbing, IMHO.