Which is the best online dating site?

Dear Mr Bitter Guy, I need dating advice ...

I haven't had a boyfriend in a few years after I had a messy divorce. Now my kids have left home to go back to college I'm thinking of using an online dating service. Which online dating service is best for a single mom. I don't wont to pay too much and I don't wont any freaks.

So which online dating service offers best value for money and best service without being too weird?

Thanks