What type of cello strings would work best for me?

I'm in my third year of playing the cello. I have only changed 4 strings (A's and the D's) I was thinking about getting some better strings. Right now I have red label and there are ok for a beginner but I feel I want to try something different. but I don't want to spend a bunch of money on something I won't like. I was thiking about getting a set of dominants, but I need some advice first.