Most Helpful Guys
I have never found any that are anything more than some kind of a scam. Do some research on how most dating sites work and you will wonder why people bother.
Most Helpful Girl
Coffee Meets Bagel is one of my preferred sites. Your suggested matches (bagels) are based on mutual FB friends, which increases the likelihood of like-mindedness. You recieve a limited number of matches a day to reduce the amount of messages from people recieved, which also makes it easier to weed out the less serious individuals. The site itself is geared towards relationships over hookups... I've heard great things about match, but have never tried it personally. Here is a list of ones I dont suggest based on personal bad experiences: