If your goal is to become an even better chessplayer (as opposed to playing for fun as your priority), I'd suggest picking up one of those 'popular' openings that everybody plays... like the Ruy, Sicilian, Italian, Scotch, etc. as white at least. Keep the Parham in your back pocket as a surprise weapon, and realize that even Nakamura didn't play it with victory in mind. Anyhow, it's nice to have several up-to-date opening books and contemporary games available as learning tools for openings you play.
If you still insist on picking between the two, you should probably be the one picking, not the chess.com forums. We don't know what you prefer!
Markus if you think these openings are a joke thats you problem.
Nachtwolf, i am now up to 1992 uscf so i am nearing that 2000+level and i never worried about openings before this but i believe i need to now.