POWERPRO!!!! Or really any superline: fireline, spiderwire, power pro, suffix, etc..
However, Powerpro is best IMO (Suffix is supposed to be great as well but I havent used it). Once you go to braid you will never go back...
No stretch, super strong, no line memory, only have to replace every 2 years, etc, etc
Now of course, this is a matter of opinion and im sure someone will post that they hate braid..