I like you're thinking on these. The main thing that turns me off is the heart. This site is going to be for guys and gals so I want to go with something a bit more masculine. I like how you went with the primary colors and you built in the slogan the best, but I don't want to rank these yet because of the heart. The best example I can give you for a symbol and branding that I like is HabitList.com. They have an infinity symbol that goes great with the notion of continual growth. I don't want to copy them but I like their branding a lot.
I really can see you're talent here so I hope you wont give up. I look forward to seeing your new ideas!