There is not one particular sign that is coolest or best signs.
Air signs: Gemini, Aquarius, and Libra are the communicators because of their spontaneous and friendly nature: people get connected to them because of the way they talk and a free spirited folks.
Earth signs: Taurus, Capricorn and Virgo. These guys are pretty hardworking and reserved but surprisingly they are adventurous and witty, something which people are not much aware of.
Water signs: Scorpio, Pisces, and Cancer. These folks are pretty sensitive and emotional. They feel things deeply and intensely and they are also pretty intuitive. Fun side is that they have amass of energy physically and mentally especially cancer. it’s hard to not notice their sense of humor.
Last but definitely not the least Fire signs: Leo, Aries and Sagittarius. They are fearless and dominant signs. They can be stubborn not as stubborn as Taurus though but definitely can match. These guys want to live life with so much adventure that they are carefree about what’s comes next.
So every sign has it’s ups and down. There is not one coolest sign!