Black triangle/gap between Lower incisors. Should I get Bioclear or Fast Braces? (Photo)

I do not want to ruin my teeth or create a bigger gap...or start something that I would have to forever maintain by re-bonding. At the same time, I do not mind spending more on Fast Braces to push the two lower teeth together. My only concern is that while I have never had braces, I am not certain how braces would fix a black triangle..the teeth are together, already.