you'll find that most instructors will tell you thiers is the bset style but honestly you have to sample diferent types of martial arts before you settle on key style
ask any of the particpants on this site how many style they have trained in and iwould be suprised if they have stayed with the same stlye throughout their training
we are all looking for that extra move or hold or strike that will make us a better martial artist
myself , i have trained in Taekwondo - Kenpo Kia Karate - Gracie Brazillian Jujitsu - Tang Soo Do - Illustrisimo Kali and if i can steel anything from other stlyes that will enhance the perfomance of my students i will