Ashley Madison used to be a good "go to" it cost a little but it was worth it. Not sure if you want to use it now that they've been hacked though.
POF is a good one just make sure you put in your profile that your single otherwise they'll kick you out but you can get good results for no money. Same is true for most regular dating sites probably.
Never had any luck on CL but you might. Never hurts to try since there are a few actual women on there looking to get laid.
I've actually gotten lucky with a chick I met from ML too.
Secret and closed groups on FB are a great place to look
