Rochas Man and Jaipur are somewhat similar in that they are both very sticky sweet and have a fair amount of vanilla. Jaipur is more oriental however, some spicy notes (cinnamon?). I would not buy the two, too close. Pick whichever is easier/cheaper for you to get. Givenchy Pi is another good alternative to the two.
If you can find Cerruti Image, it is good. Also try Burberry London, Lancome Hypnose, Chanel Allure, Issey Miyake, Versace man Eau Fraiche