Use both. I use trad most of the time, but I switch if I play rock, or I'm on someone elses drum kit and they have lots of drums. They both have advantages and disadvantages, like, buzz rolls are probably easier to learn matched, or going around the drums. Though some people will find that getting around quickly is easier matched. Also, if you play trad, you can sit closer in with the drums, because your arm is sticking out (your elbow is facing your hi hat,) whereas playing matched makes you sit further back. Playing trad is easier for brushes and things like that, though if you want to do rim clicks (cross- stick thing) you have to change to matched. Learn both, like OnThisDaysDrummer said, "learning both grips is incredibly beneficial," because you'll have different technique for each grip.
EDIT: Also like others have mentioned, when playing trad, a tilted snare makes it easier.