I don't think anyone else can tell you what openings/variations will work for YOU. You need to keep track of minor details like your results with each line (easy to do with the games you play here since it's done for you) and you need to figure out which lines suit your style taking into consideration the following factors (for starters)
1. Do you prefer to attack, defend or counter-attack?
2. Do you prefer tactical or positional play?
3. Do you prefer open, semi-open or closed games?
Whatever you play you should seriously consider buying a book written by a respected IM or GM about your preferred opening - a "How to Play" or "Learn the (whatever) Opening" At the very least you should own MCO-15 for reference purposes (for all openings). GOOD LUCK!
I was wondering of the general characteristics/statistics of the "big three" Dutch opening options as Black. I have been playing a variety of systems as Black, but I think I should settle down with the Dutch. Your responses will be much appreciated.