Yay! I want to expand my fragrance collection!

So I purchased my first fragrance, and it was Versace Man eau Fraiche. I like the smell for school during this time of year because the scent is not offensive and its very mellow. My school also does not have air conditioning :( and it can get as hot as 100 starting next month. I want to buy another fragrance for summer when i go out. I am considering L'homme and la nuit de l'homm by YSL, Burberry Touch and Cartier's Declaration, Chanel's Platinum egoiste and bleu. So which of these are the best smelling, has the best projection, sillage, and longevity? Thanks guys!

For the warm weather, from your list, I would go with:
L'homme

La nuit probably fits your reqs - but beware of wearing it to your sauna school. If I were you I would go for Platinum Egoiste and for Terre d'Hermes (instead of Declaration).

In your list, my preference would go to Declaration. You could explore also Guerlain vetiver and Hermes Concentree d'Orange Vertes (though the Hermes may not be as long lasting as other stuff).

cacio

Cartier's Declaration

From your list, Cartier Declaration would be the only one I would consider.

Declaration for me too. The L'essence version is also v nice.

For school on a hot day, you could also consider Roadster, nice minty freshness! The Declarations may be a bit overwhelming in hot weather if you're not careful.